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R&S®SMBVB-K114OFDM Signal GenerationUser Manual

User

Man

ual

Versi

on 04

1178823602(;ÜàT2)

This document describes the following software options:

● R&S®SMBVB-K1141423.8050.02

This manual describes firmware version FW 4.70.006.xx and later of the R&S®SMBV100B.

© 2019 Rohde & Schwarz GmbH & Co. KGMühldorfstr. 15, 81671 München, GermanyPhone: +49 89 41 29 - 0Fax: +49 89 41 29 12 164Email: [email protected]: www.rohde-schwarz.comSubject to change – Data without tolerance limits is not binding.R&S® is a registered trademark of Rohde & Schwarz GmbH & Co. KG.Trade names are trademarks of the owners.

1178.8236.02 | Version 04 | R&S®SMBVB-K114

The following abbreviations are used throughout this manual: R&S®SMBV100B is abbreviated as R&S SMBVB

mailto:[email protected]

http://www.rohde-schwarz.com

ContentsR&S®SMBVB-K114

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Contents1 Preface.................................................................................................... 5

1.1 About this Manual......................................................................................................... 5

1.2 Documentation Overview............................................................................................. 5

1.2.1 Getting Started Manual................................................................................................... 5

1.2.2 User Manuals and Help...................................................................................................6

1.2.3 Service Manual............................................................................................................... 6

1.2.4 Instrument Security Procedures......................................................................................6

1.2.5 Basic Safety Instructions.................................................................................................6

1.2.6 Data Sheets and Brochures............................................................................................ 6

1.2.7 Release Notes and Open Source Acknowledgment (OSA)............................................ 7

1.2.8 Application Notes, Application Cards, White Papers, etc................................................7

2 Welcome to the OFDM Signal Generation Option...............................82.1 Accessing the OFDM Signal Generation Dialog........................................................ 9

2.2 Scope............................................................................................................................. 9

2.3 Notes on Screenshots.................................................................................................. 9

3 About OFDM Signal Generation Option.............................................103.1 Required Options........................................................................................................ 10

3.2 Overview of Modulation Schemes.............................................................................10

3.2.1 OFDM............................................................................................................................10

3.2.2 f-OFDM......................................................................................................................... 10

3.2.3 GFDM............................................................................................................................11

3.2.4 UFMC............................................................................................................................12

3.2.5 FBMC............................................................................................................................ 12

3.2.6 Filtering......................................................................................................................... 14

3.3 Supported Multiple Access Schemes....................................................................... 18

3.4 Physical Layer Parameterization............................................................................... 21

3.5 Generating Configuration Files for R&S®VSE-K96.................................................. 22

4 OFDM Signal Generation Configuration and Settings......................244.1 General Settings..........................................................................................................24

4.2 General Settings..........................................................................................................27

ContentsR&S®SMBVB-K114

4User Manual 1178.8236.02 ─ 04

4.2.1 Physical Settings...........................................................................................................27

4.2.2 Filter Settings................................................................................................................ 32

4.2.3 Modulation Configuration Settings................................................................................ 35

4.3 Allocation Settings......................................................................................................37

4.3.1 User Settings.................................................................................................................37

4.3.2 Allocations Settings.......................................................................................................39

4.3.3 SCMA Settings..............................................................................................................44

4.3.4 Time Plan...................................................................................................................... 46

4.4 Trigger Settings...........................................................................................................48

4.5 Marker Settings........................................................................................................... 53

4.6 Clock Settings............................................................................................................. 54

4.7 Global Connector Settings.........................................................................................55

5 Remote-Control Commands............................................................... 565.1 General Commands.................................................................................................... 57

5.2 Physical Settings Commands....................................................................................60

5.3 Filter Commands.........................................................................................................64

5.4 Modulation Commands.............................................................................................. 67

5.5 User Commands..........................................................................................................68

5.6 Allocation Commands................................................................................................ 70

5.7 SCMA Commands....................................................................................................... 76

5.8 Trigger Commands..................................................................................................... 78

5.9 Marker Commands......................................................................................................83

5.10 Clock Commands........................................................................................................84

Annex.................................................................................................... 85

A XML Settings File................................................................................. 85

Glossary: List of the Terms and Abbreviations................................ 87

Glossary: Specifications, References, Documents with FurtherInformation........................................................................................... 89

List of Commands................................................................................90

Index......................................................................................................92

PrefaceR&S®SMBVB-K114

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1 Preface

1.1 About this Manual

This user manual provides all the information specific to the option OFDM SignalGeneration. All general instrument functions and settings common to all applicationsand operating modes are described in the main R&S SMBV100B user manual.

The main focus in this manual is on the provided settings and the tasks required togenerate a signal. The following topics are included:● Welcome to the OFDM Signal Generation option R&S SMBV100B-K114

Introduction to and getting familiar with the option● About the OFDM Signal Generation option

Background information on basic terms and principles in the context of the signalgeneration

● OFDM Signal Generation Configuration and SettingsA concise description of all functions and settings available to configure signal gen-eration with their corresponding remote control command

● Remote Control CommandsRemote commands required to configure and perform signal generation in aremote environment, sorted by tasks(Commands required to set up the instrument or to perform common tasks on theinstrument are provided in the main R&S SMBV100B user manual)Programming examples demonstrate the use of many commands and can usuallybe executed directly for test purposes

● GlossaryAlphabetical list of often used terms and abbreviations

● List of remote commandsAlphabetical list of all remote commands described in the manual

● Index

1.2 Documentation Overview

This section provides an overview of the R&S SMBV100B user documentation. Unlessspecified otherwise, you find the documents on the R&S SMBV100B product page at:

www.rohde-schwarz.com/manual/smbv100b

1.2.1 Getting Started Manual

Introduces the R&S SMBV100B and describes how to set up and start working with theproduct. Includes basic operations, typical measurement examples, and general infor-mation, e.g. safety instructions, etc. A printed version is delivered with the instrument.

Documentation Overview

http://www.rohde-schwarz.com/manual/smbv100b


6User Manual 1178.8236.02 ─ 04

1.2.2 User Manuals and Help

Separate manuals for the base unit and the software options are provided for down-load:● Base unit manual

Contains the description of all instrument modes and functions. It also provides anintroduction to remote control, a complete description of the remote control com-mands with programming examples, and information on maintenance, instrumentinterfaces and error messages. Includes the contents of the getting started manual.

● Software option manualContains the description of the specific functions of an option. Basic information onoperating the R&S SMBV100B is not included.

All user manuals are also available for download or for immediate display on the Inter-net.

1.2.3 Service Manual

Describes the performance test for checking the rated specifications, module replace-ment and repair, firmware update, troubleshooting and fault elimination, and containsmechanical drawings and spare part lists.

The service manual is available for registered users on the global Rohde & Schwarzinformation system (GLORIS, https://gloris.rohde-schwarz.com).

1.2.4 Instrument Security Procedures

Deals with security issues when working with the R&S SMBV100B in secure areas. Itis available for download on the Internet.

1.2.5 Basic Safety Instructions

Contains safety instructions, operating conditions and further important information.The printed document is delivered with the instrument.

1.2.6 Data Sheets and Brochures

The data sheet contains the technical specifications of the R&S SMBV100B. It alsolists the options and their order numbers and optional accessories.

The brochure provides an overview of the instrument and deals with the specific char-acteristics.

See www.rohde-schwarz.com/brochure-datasheet/smbv100b


https://gloris.rohde-schwarz.com

http://www.rohde-schwarz.com/brochure-datasheet/smbv100b


7User Manual 1178.8236.02 ─ 04

1.2.7 Release Notes and Open Source Acknowledgment (OSA)

The release notes list new features, improvements and known issues of the currentfirmware version, and describe the firmware installation.

The open source acknowledgment document provides verbatim license texts of theused open source software.

See www.rohde-schwarz.com/firmware/smbv100b

1.2.8 Application Notes, Application Cards, White Papers, etc.

These documents deal with special applications or background information on particu-lar topics.

See www.rohde-schwarz.com/application/smbv100b


http://www.rohde-schwarz.com/firmware/smbv100b

http://www.rohde-schwarz.com/application/smbv100b

Welcome to the OFDM Signal Generation OptionR&S®SMBVB-K114

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2 Welcome to the OFDM Signal GenerationOptionThe R&S SMBV100B-K114 is a firmware application that adds functionality to gener-ate:● User-defined OFDM signals● Pre-release 5G signals in accordance with the 5GNOW project specification

5GNOW D3.x.

With the provided settings, you can generate any of the specified waveform types andparameterize the signals. For example, you can select the pulse shaping filters, thesubcarrier spacing and the number of carriers. Moreover, you can set the used modu-lation and data content and enable preamble and cyclic prefix generation. Configura-tion of the sparse code multiple access (SCMA) settings is supported, too.

The generated signal is suitable for testing of components or receivers with user-defined OFDM signals or realistic pre-5G physical layer signals.

The R&S SMBV100B-K114 key features are:● Support of GFDM, UFMC, FBMC, f-OFDM and OFDM waveforms● Support of the proposed filter types● Flexible resource allocation, independent of the frame-type structure● Flexibly switching between different modulation formats, filters, symbol rates● Support of multiple access schemes such as SCMA● Optional use of a cyclic prefix or a preamble● Internal signal generator solution, no need for external PC● For f-OFDM and OFDM modulations, automatically generation of configuration file

for upload in the R&S®VSE-K96.

This user manual contains a description of the functionality that the application pro-vides, including remote control operation.

All functions not discussed in this manual are the same as in the base unit and aredescribed in the R&S SMBV100B user manual. The latest version is available at:

www.rohde-schwarz.com/manual/SMBV100B

Installation

You can find detailed installation instructions in the delivery of the option or in theR&S SMBV100B service manual.

https://www.rohde-schwarz.com/manual/smbv100b

Welcome to the OFDM Signal Generation OptionR&S®SMBVB-K114

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2.1 Accessing the OFDM Signal Generation Dialog

To open the dialog with OFDM Signal Generation settings

► In the block diagram of the R&S SMBV100B, select "Baseband > OFDM SignalGeneration".

A dialog box opens that displays the provided general settings.

The signal generation is not started immediately. To start signal generation with thedefault settings, select "State > On".

2.2 Scope

Tasks (in manual or remote operation) that are also performed in the base unit in thesame way are not described here.In particular, it includes:● Managing settings and data lists, like storing and loading settings, creating and

accessing data lists, or accessing files in a particular directory.● Information on regular trigger, marker and clock signals and filter settings, if appro-

priate.● General instrument configuration, such as checking the system configuration, con-

figuring networks and remote operation● Using the common status registers

For a description of such tasks, see the R&S SMBV100B user manual.

2.3 Notes on Screenshots

When describing the functions of the product, we use sample screenshots. Thesescreenshots are meant to illustrate as many as possible of the provided functions andpossible interdependencies between parameters. The shown values may not representrealistic usage scenarios.

The screenshots usually show a fully equipped product, that is: with all options instal-led. Thus, some functions shown in the screenshots may not be available in your par-ticular product configuration.

Notes on Screenshots

About OFDM Signal Generation OptionR&S®SMBVB-K114

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3 About OFDM Signal Generation OptionThe OFDM Signal Generation option enables you to create waveforms according tothe following modulation schemes OFDM, f-OFDM, GFDM, UFMC and FBMC.

● Required Options.................................................................................................... 10● Overview of Modulation Schemes...........................................................................10● Supported Multiple Access Schemes......................................................................18● Physical Layer Parameterization.............................................................................21● Generating Configuration Files for R&S®VSE-K96................................................. 22

3.1 Required Options

The basic equipment layout for generating OFDM signals includes the:● Base unit● Digital standard OFDM Signal Generation (R&S SMBVB-K114)

To play back a signal from a waveform file created by the simulation softwareR&S WinIQSIM2, the corresponding R&S WinIQSIM2 digital standard option must beinstalled.

For more information, see data sheet.

3.2 Overview of Modulation Schemes

The section gives a brief overview of the techniques and methods.

3.2.1 OFDM

The OFDM modulation is similar to the f-OFDM modulation. Other as in the f-OFDM,the OFDM does not use sub-bands and there is no predefined filtering.

Related settings

● Chapter 4.2.1, "Physical Settings", on page 27● Chapter 4.2.3, "Modulation Configuration Settings", on page 35

3.2.2 f-OFDM

The filtered OFDM (f-OFDM) modulation is a technique similar to the UFMC modula-tion. Other as in the UFMC, in the f-OFDM uses frame-based filtering.

The method is also known as Spectrum Filtered-OFDM.

Overview of Modulation Schemes


11User Manual 1178.8236.02 ─ 04

Related settings

● Chapter 4.2.1, "Physical Settings", on page 27● Chapter 4.2.2, "Filter Settings", on page 32● Chapter 4.2.3, "Modulation Configuration Settings", on page 35

3.2.3 GFDM

The Generalized Frequency Division Multiplexing (GFDM) is a method in which thedata is processed on a two-dimensional block structure, both in time and in frequencydomain. The GFDM waveform is a non-orthogonal, asynchronous multi-carrier wave-form.

In GFDM, subcarriers are independent single carriers; they can have different band-width, pulse shape and modulation. Each subcarrier is shaped with an individual trans-mit filter and then modulated with the subcarrier center frequency. The modulation isperformed on a per data block, where the data block size is a configurable value. Thecommonly used filters are the root raised cosine filters.

The implementation principle is illustrated on Figure 3-1 ([1]).

Figure 3-1: Optimized GFDM transmitter model (from [1])

D = Matrix of input symbols, QPSK, BPSK, or QAM modulateddk = Input vectork = Number of active subcarrierM = Number of symbols (block size)N = FFT sizeWM = FFT matrixR(L) = Upsampling matrix with upsampling factor LΓ = Diagonal matrix containing the time samples of the filter pulse on its diagonal; the filtering is an ele-

ment wise multiplication in the frequency domainP(k) = Permutation matrix that applies a frequency shift and moves the block input vectors to the position of

the subcarriersWH

NM = IFFT matrix that converts the signal from the frequency domain back to the time domainx = WH

NM∑kP(k)ΓR(L)WMdk

As shown on Figure 3-1, in GFDM a time-frequency response is divided into k subcarri-ers and M symbols.

Related settings

● Chapter 4.2.1, "Physical Settings", on page 27● Chapter 4.2.2, "Filter Settings", on page 32



12User Manual 1178.8236.02 ─ 04

● Chapter 4.2.3, "Modulation Configuration Settings", on page 35

3.2.4 UFMC

The Universal Filtered Multi-carrier (UFMC) technique is similar to the known OFDMtechnique but the UFMC adds one extra filtering step in the signal processing chain.

In UFMC, several consecutive subcarries are bundled into subbands. All subbandshave an equal size. Each subband is shaped with an individual Dolph-Chebyshev filter.The modulation uses an optional cyclic prefix for symbol separation.

The system model of UFMC is illustrated on Figure 3-2 ([2]).

Figure 3-2: UFMC system model (from [2])

Subband = Group of consecutive subcarriersB = Number of subbandsk = Number of active subcarriersSBk = Vector of input symbols, QPSK, BPSK, or QAM modulatedIDFT = IFFT operation to transfer the n QAM symbols to the time domainP/S = Parallel to serial conversionFBk = Subband filters with filter length LxBk = Output per subband; outputs are added

The resulting UFMC waveform is a non-orthogonal, asynchronous multi-carrier wave-form.

Related settings


3.2.5 FBMC

In the Filter Bank Multi-Carrier (FBMC) system, the filtering is applied on a per subcar-rier basis.



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The FBMC uses a synthesis-analysis filter bank method. Different implementations ofFBMC are discussed: Staggered modulated multitone (SMT FBMC), cosine modulatedmultitone (CMT FBMC), and filtered multitone (FMT FBMC). The main focus is on theSMT FBMC implementation.

In FBMS, adjacent subcarriers do overlap. The number of superimposing symbols intime is referred as overlapping factor K. To maintain the orthogonality between theadjacent subcarrier, the subcarriers are OQAM pre-processed. The cyclic prefix isoptional.

The implementation principle is illustrated on ([3]).

Figure 3-3: FBMC transmitter model (from [3])

1 = OQAM pre-processing (symbol staggering)2 = Synthesis filter bankN = Total number of subcarriersk = 1,..., N is the subcarrier indexC2R = Complex to real conversion⊗ = Complex multiplication by a factor Θ: Shifts the in-phase (I) components of the QAM symbols com-

pared to the quadrature (Q) componentsIFFT = Inverse fast Fourier transformAk(z) = Polyphase filtering per subcarrierN/2 = Upsampling by the factor N/2Z-1 = Individual delays, added on each subcarriers[m] = Transmit signal (the sum of all subcarriers)K = Overlapping factor; defines number of superimposing symbols in time

OQAM pre-processing

Orthogonal QAM is method that shifts the in-phase components of the QAM modulatedsymbols by T/2 (a half of the symbol length) compared to the quadrature (Q) compo-nents. The shift is applied alternating between the subcarrier. For example, if in thesubcarrier N-1 the I component is shifted, then in the neighbor subcarriers (N-2 and N)the Q component is shifted.



14User Manual 1178.8236.02 ─ 04

Related settings


3.2.6 Filtering

The modulation methods utilize filtering for signal shaping, but the filters are applieddifferently.

Table 3-1: Overview of time and frequency domain filtering per modulation method

Modulationmethods

Time domain filtering Frequency domain filtering

GFDM Per frame Per subcarrier

UFMC Per symbol Per subband

FBMC Per K overlapping sym-bols

(in this implementation,K = 4)

Per subcarrier

f-OFDM Per frame Per subband

OFDM none none

Each modulation method proposes a prototype filter with different characteristics, likefilter type and filter length L. The proposed prototype filter types per modulation methodare as follows:● GFDM:

Root cosine, root raised cosine, Dirichlet, and rectangular filters● UFMC:

Dolph-Chebyshev filter● FBMC:

Root raised cosine, Phydyas filter



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● f-OFDM:Soft truncation filter

● OFDMNo default filter

For UFMC, f-OFDM and OFDM, you can also load a user-defined filter described in afile. See "User filter file format (*.dat files)" on page 17.

Proposed prototype filters

Prototype filters can be designed in several ways, where each approach aims to fullydifferent requirements. In general, filters are designed to have good spectral character-istics and to be easy to be implemented.

GFDM relies on standard filter types with low complexity but with known drawback. Aprototype filter with rectangular frequency response suffers from an infinitely longimpulse response in time. A root raised cosine filter improves the side lobe suppres-sion.

Figure 3-4: Example of filer characteristics: Root cosine filter with Rolloff Factor = 0.5

A = Filter impulse responseB = Filter frequency response1 = Main lobe2 = Side lobe suppression

Adjusting the filter parameters can change the filter shape. For example, changing thefilter rolloff factor influences the steepness of the filter slopes.

Figure 3-5: Example of the frequency response of a filter with different rolloff factors



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In f-OFDM, the side lobe suppression is improved by applying a soft truncation windowfunction. The modulation uses the commonly known Hamming and Hanning windowingfunctions. Optionally, the transient response of the filter is cut at the beginning and theend of the signal. The drawback of this operation is that it increases the out-of-bandemissions.

Figure 3-6: Effect of the windowing function

1 = Rectangular filter2 = Hanning window3 = Hamming window

As shown on Figure 3-6, the soft truncation improves the side lobe suppression butresults in a wider main lobe.

UFMC proposes another windowing function with promising characteristics, the Dolph-Chebischev. The Dolph-Chebischev window is characterized by the filter length L intime domain and by the stopband attenuation (that is the desirable side lobe suppres-sion) in the frequency domain.

In FBMC, the initial prototype filter is a root raised cosine (RRC) filter with a rolloff fac-tor of 1. The Phydyas project [3] proposes an extra prototype filter designed using fre-quency sampling technique. This prototype filter is described by a few filter coefficientsthat do not depend on the filter length.

For overlapping factor K = 4, the filter coefficients are [[3], 5GNOW D3.x]:● P0 = 1

● P1 = 0.97195981

● P2 = 1/√(2)

● P3 = √(1 - P12)

The filter time response is calculated as:

Figure 3-7: Phydyas filter: Time response calculation

m = 0 to KNc – 2K = 4 is the overlapping factorN = Number of subcarriers



17User Manual 1178.8236.02 ─ 04

n = Symbol numberT = Symbol periodk = Subcarrier number

The stopband attenuation of the Phydyas filter exceeds 60 dB for the frequency rangeof more than 10 subcarrier spacings [[3], 5GNOW D3.x].

User filter file format (*.dat files)

Additionally to the proposed prototype filter, for UFMC, f-OFDM and OFDM, you candefine your own filters.

User filter files are ASCII files with simple format and file extension *.dat.

These files describe filters as a sequence of normalized filter coefficients. Each coeffi-cient is defined as a pair of I and Q samples. The I and Q components alternate ateach file line. The I and Q values vary between - 1 and + 1.

User filter file can contain up to 800 coefficients. Once loaded in the software, the file isevaluated and the parameter User Filter Length shows the number of coefficients.

You can create user filter files for example with MATLAB, see for example the followingMATLAB script.

Example: Script that generates user filter fileFunction [b, n] = generateUserFilter(filterSets, destPath)% generateUserFilter returns the filter coefficients of a user-defined (baseband-)filter, % whose are stored to a .dat file and can be% loaded as an user filter in R&S SMW%% where:% filterSets.fftSize is the used FFT size that is used for the OFDM modulation% filterSets.nOccSubcarrier is the number of occupied subcarriers% filterSets.transRegionRatio controls the steepness of the filter % with regards to the ratio of fftSize/2% filterSets.rp passband ripple in percentage% filterSets.rs stopband attenuation ripple in percentage%% Example use: % [b n] = RsFilt.generateUserFilter(struct('fftSize',4096, 'nOccSubcarrier',3376),'.');%% b - complex filter coefficients% n - filter order

if (~isfield(filterSets,'transRegionRatio')) filterSets.transRegionRatio = 0.07;end

if (~isfield(filterSets,'rp')) filterSets.rp = 0.0001;end



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if (~isfield(filterSets,'rs')) filterSets.rs = 60;end

% steepness of filtertransRegion = filterSets.transRegionRatio * filterSets.fftSize/2; %in %, controls steepness of filter slopes, relative to nyquist frequency

%cutoff frequenciesf = [filterSets.nOccSubcarrier/2 filterSets.nOccSubcarrier/2+transRegion];

%ripples in dBdev = [(10^(filterSets.rp/20)-1)/(10^(filterSets.rp/20)+1) 10^(-filterSets.rs/20)];

%estimate filter order[n,fo,ao,w] = firpmord(f,[1 0],dev,filterSets.fftSize);

%make filter symmetricn = n + mod(n,2)

%generate filter coefficientsb = firpm(n,fo,ao,w);

% fvtool(b); %displays filter response

%% write filter out into .dat filter coefficient filecoeffsOut = zeros(2*length(b),1);coeffsOut(1:2:end) = real(b); coeffsOut(2:2:end) = imag(b); % serialize complex coefficients

if (exist('destPath')) dlmwrite([destPath '\smw_user_filter_' num2str(length(b)) 'taps_' num2str(filterSets.nOccSubcarrier) 'scs_' num2str(filterSets.fftSize) 'fft.dat'],coeffsOut);end

end

Related settings

● Chapter 4.2.2, "Filter Settings", on page 32

3.3 Supported Multiple Access Schemes

Multiple access schemes are offered to assign the individual allocations to differentusers.

Supported Multiple Access Schemes


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Sparse Code Multiple Access (SCMA) is a non-orthogonal multiple access technologythat is considered as a key candidate 5G multiple access scheme. This technique addsa CDMA (code division multiple access) component to the orthogonal division multipleaccess technology OFDMA. SCMA uses multi-layer sparse codewords to separateusers that share common time and frequency resources.

In comparison to LTE, SCMA combines modulation mapping and spreading into oneoperation. Each layer corresponds to unique codebook. The binary input data are map-ped directly to the multiple layers complex codeword and then spread over the subcar-riers.

SCMA encoding and parameters dependency

The example on Figure 3-8 is an illustration of a codebook.

Figure 3-8: SCMA encoding parameters

M = 4 is the codebook size (that is the number of codewords)K = 4 is the spreading factor (that is the spread codeword length)N = 2 is the number of non-zero elementsK-N = 2 is the number of zero elements

The number of layers J (that is also the number of unique codebooks) is calculated asfollows:

NK

J

The number of layers gives the number of unique combinations that are possible forthe given codeword length (K) and number of non-zero elements (N). For K = 4 and N= 2, the maximum number of layers is J = 6. In SCMA, one user can be assigned toseveral layers, whereas each layer can be assigned to exact one user. Hence, themaximum number of users corresponds to the number of layers and is also 6.

The example on Figure 3-9 illustrates the principle of the SCMA encoding.



20User Manual 1178.8236.02 ─ 04

Figure 3-9: SCMA encoding example (K = 4, N = 2, J = 6)

User#x = 6 usersCodebook#x = 6 codebooks or layersBitstream = Binary input data per user, for example User#0 sends bits (0,0)CWy,x = Codeword#y form codebook#x∑ = Combining the symbols

In this example, each user is assigned to one layer (codebook). The bits that the usersare transmitting are highlighted. For example, User#0 sends bits (0,0), that corre-sponds to codeword CW0,0 from the user-specific codebook#0. The 6 codewords ofthe 6 users are combined; note that max. 3 symbols overlap. The combined signal of 6users is spread over the subcarriers; the spreading factor is 4.

SCMA parameterization

The SCMA implementation in R&S SMBVB-K114 is illustrated Figure 3-8. it uses thefollowing fix parameters:● Number of layers = 6● Codebook size = 4● Spreading factor = 4

Related settings

● Chapter 4.3.3, "SCMA Settings", on page 44● Chapter 4.3.2, "Allocations Settings", on page 39



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3.4 Physical Layer Parameterization

Data allocation

The input symbols can be modulated in one of the base modulations: BPSK, QPSK,16QAM, 64QAM, 256QAM and SCMA.

Additionally to the base modulation, you can load files with custom modulated I/Q dataand configure allocations modulated in other modulation shemes, like CAZAC sequen-ces for instance. See "Custom I/Q file format (*.iqw or *.dat files)" on page 21.

Related settings:● Chapter 4.3, "Allocation Settings", on page 37

Custom I/Q file format (*.iqw or *.dat files)

Custom I/Q files are files in one of the following formats:● *.dat files

ASCII files with simple format and file extension *.dat.The file content is a sequence of pairs of I and Q samples. The I and Q compo-nents alternate at each file line. The I and Q values vary between - 1 and + 1.

● *.iqw filesBinary files containing complex I/Q data of 32-bit floating point data type.The file contents are I/Q samples described as paired alternating I and Q values(IQIQIQ).

Related settings:● "Modulation" on page 41

Cyclic prefix (CP)

A guard time called cyclic prefix (CP) can optionally be used. Note that the CP calcula-tion depends on the used modulation scheme.

Related settings:● "Cyclic Prefix Length" on page 29● For f-OFDM, also:

– "Alt. Cyclic Prefix Length" on page 30– "CP No. Symbols/Alt. CP No. Symbols" on page 31

Sequence length calculation

The sequence length depends on the modulation method. Sequence length can beexpressed as number of symbols or as number of samples.

Calculation of the sequence length as number of samples and per modulation methodis as follows:● f-OFDM/OFDM

Physical Layer Parameterization


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Sequence Length [Samples] = ("Total Number of Subcarriers"*"Sequence Length"[Symbols] + "Cyclic Prefix Length"*"CP No. Symbols" + "Alt. Cyclic PrefixLength"*"Alt. CP No. Symbols")

● UFMCSequence Length [Samples] = "Cyclic Prefix Length" + ("Total Number of Subcarri-ers" + "Filter Length" - 1)*("Sequence Length" [Symbols]

● FBMC– If "Cut Transient Response = Off":

Sequence Length [Samples] = ("Sequence Length" [Symbols] + "Overlap Fac-tor" - 0.5)*"Total Number of Subcarriers" + "Cyclic Prefix Length"

– If "Cut Transient Response = On":Sequence Length [Samples] = ("Sequence Length" [Symbols] + "Overlap Fac-tor" - 0.5)*"Total Number of Subcarriers" + "Cyclic Prefix Length" - "Total Num-ber of Subcarriers"*"Overlap Factor"

Where "Overlap Factor = 4"● GFDM

Sequence Length [Samples] = "Cyclic Prefix Length" + "Total Number of Subcarri-ers"*"Sequence Length" [Symbols]

3.5 Generating Configuration Files for R&S®VSE-K96

If you generate f-OFDM or OFDM modulated signals, the R&S SMBV100B createsautomatically an *.xml settings file. You can use this file for measurements withRohde & Schwarz signal analyzer, for example R&S®VSE-K96.

R&S®VSE-K96 processes the waveforms, generated with R&S SMBV100B, differently,depending on the allocation content:● Pilots:

For f-OFDM and OFDM the R&S®VSE-K96 requires pilot allocations for the signalanalysis. The analyzer needs the pilots to decode the channel coding properly.

● Data:The data allocations contain the resource elements of the corresponding modula-tion.If you use the generated *.xml settings file, the information on the pilots and dataallocations is transmitted automatically.

● Reserved:Signal analyzer perceives reserved allocations as general OFDM modulated sig-nals. The allocation content can be any user-defined information.

How to create, transfer and use the settings file

1. In the R&S SMBV100B, configure the signal as required.

2. Enable signal generation ("State > On").

The *.xml settings file is created automatically.

Generating Configuration Files for R&S®VSE-K96


23User Manual 1178.8236.02 ─ 04

It is saved in the user directory as /var/user/K114/Exported_K114_settings_K96.xml.

3. Connect to the user directory of the R&S SMBV100B via USB, LAN, ftp or anyother access methods.Open, for example, the \\<R&S SMBV100B IP Address>\share\K114\.See also, chapter "File and Data Management" in the R&S SMBV100B user man-ual.

4. Copy the Exported_K114_settings_K96.xml file

5. Transfer and load it in the R&S®VSE-K96

Required settings are performed automatically, so that you can start analyzing thesignal.

Generating Configuration Files for R&S®VSE-K96

OFDM Signal Generation Configuration and SettingsR&S®SMBVB-K114

24User Manual 1178.8236.02 ─ 04

4 OFDM Signal Generation Configuration andSettingsAccess:

► Select "Baseband > OFDM Signal Generation".

The remote commands required to define these settings are described in Chapter 4,"OFDM Signal Generation Configuration and Settings", on page 24.

Settings:

● General Settings..................................................................................................... 24● General Settings..................................................................................................... 27● Allocation Settings...................................................................................................37● Trigger Settings.......................................................................................................48● Marker Settings.......................................................................................................53● Clock Settings......................................................................................................... 54● Global Connector Settings...................................................................................... 55

4.1 General Settings

Access:

► Select "Baseband > OFDM Signal Generation".

This dialog comprises the standard general settings, to the default and the "Save/Recall" settings, as well as selecting the modulation type and access to dialogswith further settings.

Settings:

State..............................................................................................................................25Set to Default................................................................................................................ 25Save/Recall................................................................................................................... 25

General Settings


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Generate Waveform File............................................................................................... 25Modulation Type............................................................................................................26Export path for XML settings.........................................................................................26Set to Modulation Default..............................................................................................27General Settings…........................................................................................................27Allocation Settings…..................................................................................................... 27

StateActivates the standard and deactivates all the other digital standards and digital modu-lation modes in the same path.

Remote command: [:SOURce<hw>]:BB:OFDM:STATe on page 57

Set to DefaultCalls the default settings. The values of the main parameters are listed in the followingtable.

Parameter Values

State Not affected by "Set to Default"

Modulation Type OFDM

Remote command: [:SOURce<hw>]:BB:OFDM:PRESet on page 58

Save/RecallAccesses the "Save/Recall" dialog, that is the standard instrument function for storingand recalling the complete dialog-related settings in a file. The provided navigationpossibilities in the dialog are self-explanatory.

The filename and the directory, in which the settings are stored, are user-definable; thefile extension is predefined.

See also, chapter "File and Data Management" in the R&S SMBV100B user manual.

Remote command: [:SOURce<hw>]:BB:OFDM:SETTing:CATalog on page 58[:SOURce<hw>]:BB:OFDM:SETTing:LOAD on page 58[:SOURce<hw>]:BB:OFDM:SETTing:STORe on page 58[:SOURce<hw>]:BB:OFDM:SETTing:DEL on page 59

Generate Waveform FileWith enabled signal generation, triggers the instrument to store the current settings asan ARB signal in a waveform file. Waveform files can be further processed by the ARBand/or as a multi-carrier or a multi-segment signal.

The filename and the directory it is stored in are user-definable; the predefined fileextension for waveform files is *.wv.

Remote command: [:SOURce<hw>]:BB:OFDM:WAVeform:CREate on page 59

General Settings


26User Manual 1178.8236.02 ─ 04

Modulation TypeSelects the modulation type.

"OFDM" You can create your own OFDM signal, for example configure theallocations as required.For more information, see Chapter 3.5, "Generating ConfigurationFiles for R&S®VSE-K96", on page 22.

"f-OFDM" Filtered-OFDMThe filtered OFDM (f-OFDM) modulation is a technique similar to theUFMC modulation.See Chapter 3.2.1, "OFDM", on page 10.An *.xml setting file is created for this modulation type, too.For more information, see Chapter 3.5, "Generating ConfigurationFiles for R&S®VSE-K96", on page 22.

"UFMC" Universal Filtered Multi-CarrierUFMC is similar to OFDM but an additional filter is applied to eachsubband. The modulation used an optional cyclic prefix and a Dolph-Chebyshev filter.See Chapter 3.2.4, "UFMC", on page 12.

"GFDM" Generalized Frequency Division MultiplexingData processing is performed on a two-dimensional block structure,both in time and frequency domain.Each subcarrier is pulse-shaped with a transmit filter and then modu-lated.See Chapter 3.2.3, "GFDM", on page 11.

"FBMC" Filter Bank Multi-CarrierThis modulation uses staggered modulated multitone filter bank (SMTFBMC) method where the subcarriers are OQAM modulated.See Chapter 3.2.5, "FBMC", on page 12.

Remote command: [:SOURce<hw>]:BB:OFDM:MODulation on page 59

Export path for XML settingsAccesses a standard "File Select" dialog to specify the output path of the created*.xml settings file.

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27User Manual 1178.8236.02 ─ 04

By default, the output path /var/user/K114-Export and output fileExported_K114_settings_K96.xml is specified.

If modulation "State > On", the *.xml settings file is created automatically. You canuse this file for measurements with Rohde & Schwarz signal analyzer, for exampleR&S®VSE-K96.

See also Example "Default "Exported_K114_settings_K96.xml" file" on page 85.

Remote command: [:SOURce<hw>]:BB:OFDM:OUTPath on page 59

Set to Modulation DefaultCalls the default settings for the selected Modulation Type.

Remote command: [:SOURce<hw>]:BB:OFDM:MODPreset on page 59

General Settings…Accesses the "General Settings" dialog of the selected modulation.

For description, see:● Chapter 4.2.1, "Physical Settings", on page 27● Chapter 4.2.2, "Filter Settings", on page 32● Chapter 4.2.3, "Modulation Configuration Settings", on page 35

Remote command: n.a.

Allocation Settings…Accesses the "Allocation Settings" dialog, see Chapter 4.3, "Allocation Settings",on page 37.


4.2 General Settings

● Physical Settings.....................................................................................................27● Filter Settings.......................................................................................................... 32● Modulation Configuration Settings.......................................................................... 35

4.2.1 Physical Settings

Access:

► Select "OFDM Signal Generation > General Settings".

The physical settings are common to all modulation schemes.

General Settings


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Settings:

Total Number Of Subcarriers.........................................................................................28Occupied Number of Subcarriers..................................................................................28Subcarrier Spacing........................................................................................................29Sequence Length.......................................................................................................... 29Cyclic Prefix Length...................................................................................................... 29Alt. Cyclic Prefix Length................................................................................................ 30CP No. Symbols/Alt. CP No. Symbols.......................................................................... 31Sampling Rate...............................................................................................................31Occupied Bandwidth..................................................................................................... 31Number Of Left/Right Guard Subcarriers......................................................................32

Total Number Of SubcarriersSets the number of available subcarriers, that is the FFT size.

The maximum number of subcarriers depends on the selected "Subcarrier Spacing" asfollows:

"Total Number of Subcarriers" * Subcarrier Spacing ≤ Bandwidthmax

The available baseband bandwidth depends on the installed options, see data sheet.

Remote command: [:SOURce<hw>]:BB:OFDM:NSUBcarriers on page 60

Occupied Number of SubcarriersSets the number of occupied subcarriers.

The maximum number of occupied subcarriers is calculated as follows:

"Occupied Number of Subcarriers"max = 0.83 * Total Number Of Subcarriers

For the UFMC modulation, the "Occupied Number of Subcarriers" has to be a multipleof the selected Number of Sub-bands.

Remote command: [:SOURce<hw>]:BB:OFDM:NOCCupied on page 61

General Settings


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Subcarrier SpacingSets the frequency distance between the carrier frequencies of the subcarriers.

The subcarriers are evenly distributed within the available bandwidth. All subcarriersspan the same bandwidth and there is no frequency gap between adjacent subcarriers.Hence, the parameter "Subcarrier Spacing" sets also the subcarrier bandwidth.

Remote command: [:SOURce<hw>]:BB:OFDM:SCSPace on page 61

Sequence LengthSets the sequence length of the signal in number of symbols.

See also "Sequence length calculation" on page 21.

Remote command: [:SOURce<hw>]:BB:OFDM:SEQLength on page 61

Cyclic Prefix LengthSets the cyclic prefix (CP) length as number of samples.

The maximum number of symbols that can be used as a CP is calculated as follows:

"Cyclic Prefix Length"max = 0.5*Total Number Of Subcarriers

The cyclic prefix calculation depends on the modulation scheme:● f-OFDM/OFDM

Similar to the calculation in LTE, the cyclic prefix is applied as a cyclic extension toeach symbol.

Figure 4-1: Principle of cyclic prefix calculation in f-OFDM/OFDM (default configuration with CPNo. Symbols = 0, Alt. Cyclic Prefix Length = 0)

CP = Cyclic prefixCP Length = Selected number of samplesSubcarriers = Total Number Of SubcarriersSequence Length = Selected number of symbols; 8 symbols in this exampleTotal number of samples = Calculated as described in "Sequence length calculation" on page 21

To apply different CP to a certain number of symbols or to use an alternating CPpattern, use the combination of the parameters Alt. Cyclic Prefix Length and CPNo. Symbols/Alt. CP No. Symbols.

● UFMC, GFDM, FBMCIf a "CP Length ≠ 0" is selected, then last samples of the complete signal are pre-pended to the signal.

General Settings


30User Manual 1178.8236.02 ─ 04

Figure 4-2: Principle of cyclic prefix calculation in UFMC, GFDM, and FBMC

CP = Cyclic prefixCP Length = Selected number of samplesSubcarriers = Total Number Of SubcarriersSequence Length = Selected number of symbols; 8 symbols in this exampleTotal number of samples = Calculated as described in "Sequence length calculation" on page 21

Remote command: [:SOURce<hw>]:BB:OFDM:CPLength on page 61

Alt. Cyclic Prefix LengthFor f-OFDM/OFDM, you can modify the default CP assignment where the same CP isapplied to each symbol and enable additional alternative CP, see Figure 4-3.

Both cyclic prefix (CP) lengths are set as number of samples. The parameters CP No.Symbols/Alt. CP No. Symbols determine for how many symbols each of the CP isapplied. These parameters thus define a pattern of alternating cyclic prefixes.

Figure 4-3: Dynamic cyclic prefixes in f-OFDM/OFDM (example with Alt. Cyclic Prefix Length ≠ CyclicPrefix Length, CP No. Symbols = 1, Alt. CP No. Symbols = 7)

CP = Cyclic prefixCP Length = CP duration as number of samples, e.g 160 samplesAlt. CP Length = Duration of the alternative CP as number of samples, e.g 144 samplesCP No. Symbol = 1 (number of symbols for that the selected CP length is applied)Alt. CP No. Symbols = 7 (number of symbols for that the selected Alt. CP length is applied)Sequence Length = Selected number of symbols; 8 symbols in this exampleSubcarriers = Occupied Number of Subcarriers, e.g. 400 so that the Occupied Bandwidth = 20

MHzTotal number of samples = Calculated as described in "Sequence length calculation" on page 21

Remote command: [:SOURce<hw>]:BB:OFDM:ACPLength on page 62

General Settings


31User Manual 1178.8236.02 ─ 04

CP No. Symbols/Alt. CP No. SymbolsFor f-OFDM/OFDM, these parameters determine for how many symbols each of theCP (Cyclic Prefix Length and Alt. Cyclic Prefix Length) is applied.

See also Figure 4-3.

0 Disables the corresponding CP.Thus, even if a CP length different than zero is set but an alternativeCP length with "Alt. CP No. Symbols ≠ 0" is configured, the CP lengthis ignored, if "CP No. Symbols = 0". The alternative CP length isapplied or all symbols in the sequence.

Example: If:● "Sequence Length = 8"● "Cyclic Prefix Length = 160" and "CP No. Symbols = 0"● "Alt. Cyclic Prefix Length = 144" and "Alt. CP No. Symbols = 2"Then a CP of 144 samples is applied to all 8 symbols.

Other than 0 The value ranges of the parameters are calculated as follows:"CP No. Symbols" + "Alt. CP No. Symbols" ≤ "Sequence Length"If the sum is shorter than the "Sequence Length", the defined CP pat-tern is applied cyclically within this sequence length. Unused CPlength values are discarded.

Example: If:● "Sequence Length = 8"● "Cyclic Prefix Length = 160" and "CP No. Symbols = 2"● "Alt. Cyclic Prefix Length = 144" and "Alt. CP No. Symbols = 3"Then the CP = 160 samples is applied to symbols 1, 2, 6 and 7 andthe CP = 144 samples - to symbols 3, 4, 5 and 8.

Remote command: [:SOURce<hw>]:BB:OFDM:CPSYmbols on page 62[:SOURce<hw>]:BB:OFDM:ACPSymbols on page 62

Sampling RateDisplays the sampling rate.

The value is derived as follows:

"Sampling Rate" = Total Number Of Subcarriers * Subcarrier Spacing

Remote command: [:SOURce<hw>]:BB:OFDM:SAMPling? on page 62

Occupied BandwidthDisplays the occupied bandwidth.

The value is derived as follows:

"Occupied Bandwidth" = Occupied Number of Subcarriers * Subcarrier Spacing

General Settings


32User Manual 1178.8236.02 ─ 04

Some settings result in a higher "Occupied Bandwidth" than the maximum bandwidthof the R&S SMBV100B. If the maximum bandwidth is exceeded, a warning messageindicates the maximum supported bandwidth given the installed hardware options.

The figue belows shows an example of the R&S SMBV100B equipped with maximumbandwidth of 500 MHz (R&S SMBVB-K524). "Occupied Number of Subcarriers > 55"and "Subcarrier Spacing = 9.375 MHz" result in "Occupied Bandwidth = 515.625 MHz".The warning message displays the supported maximum bandwidth.

Remote command: [:SOURce<hw>]:BB:OFDM:BWOCcupied? on page 63

Number Of Left/Right Guard SubcarriersDisplays the number of left guard and right guard subcarriers.

The number of guard subcarriers is calculated as follows:● "Number Of Left Guard Subcarriers" is the rounded up value of

(Total Number Of Subcarriers - Occupied Number of Subcarriers) / 2● "Number Of Right Guard Subcarriers" = Total Number Of Subcarriers - "Number Of

Left Guard Subcarriers"

Remote command: [:SOURce<hw>]:BB:OFDM:LGUard? on page 63[:SOURce<hw>]:BB:OFDM:RGUard? on page 63

4.2.2 Filter Settings

Access:

1. Select "OFDM Signal Generation > Modulation Type > for example UFMC".

2. Select "OFDM Signal Generation > General Settings".

General Settings


33User Manual 1178.8236.02 ─ 04

3. Select "Filter".

The filter settings depend on the selected modulation scheme.See also Chapter 3.2.6, "Filtering", on page 14.

Settings:

Filter Type..................................................................................................................... 33Rolloff Factor.................................................................................................................34Filter Length.................................................................................................................. 34Stopband Attenuation....................................................................................................34Windowing Method........................................................................................................34Cut Transient Response................................................................................................35User Filter Length..........................................................................................................35Load User Filter.............................................................................................................35

Filter TypeSets the filter type.

The available types depend on the selected "Modulation Type":● OFDM

None● f-OFDM:

Soft truncation filter● GFDM:

Root cosine, root raised cosine, Dirichlet, and rectangular filters● UFMC:

Dolph-Chebyshev filter● FBMC:

Root raised cosine, Phydyas filterAdditionally, you can load a user-defined filter described in a file.

See also Chapter 3.2.6, "Filtering", on page 14.

Remote command: [:SOURce<hw>]:BB:OFDM:FILTer:TYPE on page 64

General Settings


34User Manual 1178.8236.02 ─ 04

Rolloff FactorSets the filter parameter.

The rolloff factor affects the steepness of the filter slopes. A "Rolloff Factor = 0" resultsin the steepest slopes; values near to 1 make the slopes more flat.

Figure 4-4: Example of the frequency response of a filter with different rolloff factors

Remote command: [:SOURce<hw>]:BB:OFDM:FILTer:ROLLoff on page 65

Filter LengthSet the number of filter tabs and changes the filter shape in the time domain.

Remote command: [:SOURce<hw>]:BB:OFDM:FILTer:LENGth on page 65

Stopband AttenuationThe UFMC modulation uses a Dolph-Chebyshev window to filter each subband.

The following parameters affect the shape of the Dolph-Chebyshev window:● Filter Length (L) changes the shape in the time domain● "Stopband Attenuation" (sidelobe attenuation) affects the shape in the frequency

domain.See also "Proposed prototype filters" on page 15.

Remote command: [:SOURce<hw>]:BB:OFDM:FILTer:SBATtenuation on page 65

Windowing MethodThe f-OFDM modulation uses a soft truncation window to filter each subband.

The windowing model affects the shape in the frequency domain. The Hamming win-dowing method, for example, is optimized for better side-lobes suppression.

The following parameters also affect the shape of the filter window:● Filter Length● Cut Transient ResponseSee also "Proposed prototype filters" on page 15.

Remote command: [:SOURce<hw>]:BB:OFDM:FILTer:WINDowing on page 66

General Settings


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Cut Transient ResponseCuts the transient response of the filtering operation at the beginning and end of thesignal. The length of the cut samples depends on the selected Filter Length.

See also "Proposed prototype filters" on page 15.

Remote command: [:SOURce<hw>]:BB:OFDM:FILTer:CUTTrans on page 65

User Filter LengthIndicates the number of filter coefficients in the user filter file, see "User filter file format(*.dat files)" on page 17.

Remote command: [:SOURce<hw>]:BB:OFDM:FILTer:ULENgth? on page 66

Load User FilterAccesses the dialog "Select List File User Filter" for loading a user-defined filter file.

User filters are described in files with extension *.dat, see "User filter file format (*.datfiles)" on page 17.

Remote command: [:SOURce<hw>]:BB:OFDM:FILTer:USELection on page 66[:SOURce<hw>]:BB:OFDM:FILTer:UCATalog? on page 66

4.2.3 Modulation Configuration Settings

Access:


2. Select "OFDM Signal Generation > General Settings".

3. Select "Modulation Configuration".

The provided settings depend on the selected modulation type.

General Settings


36User Manual 1178.8236.02 ─ 04

Settings:

Number of Sub-bands................................................................................................... 36Subcarriers per Subband.............................................................................................. 36Subband Filter Pre-equalization....................................................................................36Data Block Size.............................................................................................................36Overlap Factor K........................................................................................................... 37

Number of Sub-bandsIn UFMC and f-OFDM, sets the number of sub-bands.

A sub-band is a group of adjacent subcarriers. The number of subcarriers in one sub-band is calculated as follows:

Subcarriers per Subband = Occupied Number of Subcarriers / Number of Sub-bands

Remote command: [:SOURce<hw>]:BB:OFDM:UFMC:NSUBand on page 67[:SOURce<hw>]:BB:OFDM:FOFDm:NSUBand on page 67

Subcarriers per SubbandIn UFMC and f-OFDM, indicates the number of adjacent subcarriers within a sub-band.

It is calculated as:

Subcarriers per Subband = Occupied Number of Subcarriers / Number of Sub-bands

Remote command: [:SOURce<hw>]:BB:OFDM:SUBCarriers? on page 67

Subband Filter Pre-equalizationIn UFMC, applies a filter pre-equalization according to the specification 5GNOW D3.x.

It equalizes the non-ideal filter response of the subband-filter by increasing or decreas-ing the power of outer and inner subcarriers of a subband.

Table 4-1: Effect of filter pre-equaölization on the UFMC modulation ("Number of Subbands = 4")

"Subband Filter Pre-equalization > Off" "Subband Filter Pre-equalization > On"

Remote command: [:SOURce<hw>]:BB:OFDM:UFMC:PREequal on page 68

Data Block SizeIn GFDM, sets data block size M in terms of symbols per data block.

General Settings


37User Manual 1178.8236.02 ─ 04

The "Data Block Size" is a value between 1 and the Sequence Length value and mustbe a common divisor of the "Sequence Length".

Remote command: [:SOURce<hw>]:BB:OFDM:GFDM:DBSYmbols on page 67

Overlap Factor KDescribes the number of overlapping (superimposed) symbols in time on the samesubcarrier.

This parameter influences the filter length.


4.3 Allocation Settings

Access:


2. Select "OFDM Signal Generation > Allocation Settings".

The main part of the "Allocation Settings" dialog is the allocation table where the indi-vidual allocations can be defined. Each allocation can use different (base) modulationtype and data source. The allocations can differ in the used number of symbols, theoccupied number of subcarriers, and the individual position within the time-frequency-grid. Different users can be assigned to the allocations, where each user uses individ-ual data source and multiple access schemes.

The "Time Plan" shows individual allocations on the time-frequency-grid.

Settings:

● User Settings...........................................................................................................37● Allocations Settings.................................................................................................39● SCMA Settings........................................................................................................44● Time Plan................................................................................................................ 46

4.3.1 User Settings

Access:



Allocation Settings


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Settings:

Number of Users........................................................................................................... 38User...............................................................................................................................38Data Source.................................................................................................................. 38ρ / dB.............................................................................................................................39State..............................................................................................................................39

Number of UsersIndicates the maximum number of users that can be configured.

Any configured user can be deactivated.

UserDisplays the consecutive number of the user.

Data SourceThe following standard data sources are available:● "All 0, All 1"

An internally generated sequence containing 0 data or 1 data.● "PNxx"

An internally generated pseudo-random noise sequence.● "Pattern"

An internally generated sequence according to a bit pattern.Use the "Pattern" box to define the bit pattern.

● "Data List/Select DList"A binary data from a data list, internally or externally generated.

Allocation Settings


39User Manual 1178.8236.02 ─ 04

Select "Select DList" to access the standard "Select List" dialog.– Select the "Select Data List > navigate to the list file *.dm_iqd > Select" to

select an existing data list.– Use the "New" and "Edit" functions to create internally new data list or to edit

an existing one.– Use the standard "File Manager" function to transfer external data lists to the

instrument.See also:● Section "Modulation Data" in the R&S SMBV100B user manual.● Section "File and Data Management" in the R&S SMBV100B user manual.● Section "Data List Editor" in the R&S SMBV100B user manual

Remote command: [:SOURce<hw>]:BB:OFDM:USER<ch0>:DATA on page 68[:SOURce<hw>]:BB:OFDM:USER<ch0>:LIST on page 68[:SOURce<hw>]:BB:OFDM:USER<ch0>:PATTern on page 69

ρ / dBBoosts the user with the selected power offset relative to the other users.

Remote command: [:SOURce<hw>]:BB:OFDM:USER<ch0>:PWR on page 69

StateEnables the individual user.

Remote command: [:SOURce<hw>]:BB:OFDM:USER<ch0>:STATe on page 69

4.3.2 Allocations Settings

Access:



Allocation Settings


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3. Select "Allocations".

In this dialog, you can configure the individual allocations so that each allocationuses different base modulation type, data source, power offset and time-frequencyresources.Use the Time Plan to visualize the resulting resource grid assignments.

Settings:

Number of Allocations................................................................................................... 40Alloc. #.......................................................................................................................... 40Modulation.....................................................................................................................41No. SC...........................................................................................................................41No. Sym........................................................................................................................ 41Offset SC.......................................................................................................................41Offset Sym.....................................................................................................................41Phys Bits....................................................................................................................... 41Data Source.................................................................................................................. 41ρ / dB.............................................................................................................................42Content Type.................................................................................................................42State..............................................................................................................................43Conflict.......................................................................................................................... 44

Number of AllocationsSets the number of scheduled allocations.

Remote command: [:SOURce<hw>]:BB:OFDM:NALLoc on page 72

Alloc. #Displays the consecutive number of the allocation.


Allocation Settings


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ModulationThe input symbols can be modulated in one of the base modulations: BPSK, QPSK,16QAM, 64QAM, 256QAM and SCMA.

Additionally, you can load files with custom modulated I/Q data. Custom I/Q files arefiles with predefined file syntax and extension, see "Custom I/Q file format (*.iqw or*.dat files)" on page 21.

If "Data Source > User x", changing this parameter sets also the parameter "Modula-tion" of all allocations, belonging to the same user.

Remote command: [:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:MODulation on page 72

No. SCSets the number of allocated subcarriers, that is the allocated bandwidth.

If SCMA is used, the number of allocated subcarries must be a multiple of the spread-ing factor K (see Spreading Factor K).

Remote command: [:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCNO on page 73

No. Sym.Sets the allocation size in the time domain as number of symbols.

Remote command: [:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SYNO on page 73

Offset SCSets the start subcarrier of the selected allocation. It shifts the allocated bandwidth inthe frequency domain.

Remote command: [:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCOFfset on page 73

Offset Sym.Sets the start symbol of the selected allocation. It shifts the allocation in the timedomain.

Remote command: [:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SYOFfset on page 73

Phys BitsDisplays the allocation size in bits.

The value depends on the allocation size and the used modulation.

Remote command: [:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:PHYSbits? on page 74

Data SourceSelects the data source for the allocation.

"User x" Use the User Settings dialog to configure the data sources for the"User 1 to 6".

Allocation Settings


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"Config" If "Modulation > SCMA", opens a dialog with further settings, seeChapter 4.3.3, "SCMA Settings", on page 44.

"I/Q Source" For "Modulation > Custom I/Q", select "Select IQ Source" to accessthe standard "Select List" dialog.Select the "Select IQ Source > navigate to a *.dat or *.iqw file >Select" to select an existing file.Use the standard "File Manager" function to transfer external datalists to the instrument.For information on the file format, see "Custom I/Q file format (*.iqwor *.dat files)" on page 21.

"All 0, All 1, PNxx, Pattern, Data List/Select DList"The following standard data sources are available:● "All 0, All 1"

An internally generated sequence containing 0 data or 1 data.● "PNxx"

An internally generated pseudo-random noise sequence.● "Pattern"

An internally generated sequence according to a bit pattern.Use the "Pattern" box to define the bit pattern.

● "Data List/Select DList"A binary data from a data list, internally or externally generated.Select "Select DList" to access the standard "Select List" dialog.– Select the "Select Data List > navigate to the list file *.dm_iqd

> Select" to select an existing data list.– Use the "New" and "Edit" functions to create internally new

data list or to edit an existing one.– Use the standard "File Manager" function to transfer external

data lists to the instrument.See also:● Section "Modulation Data" in the R&S SMBV100B user manual.● Section "File and Data Management" in the R&S SMBV100B user

manual.● Section "Data List Editor" in the R&S SMBV100B user manual

Remote command: [:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:DATA on page 74[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:LIST on page 74[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:PATTern on page 74[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:CIQFile on page 75

ρ / dBBoosts the allocation with the selected power offset relative to the others.

Remote command: [:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:PWR on page 75

Content TypeIndicates content type.

"Data" The allocation contains the data, selected with the parameter DataSource.

Allocation Settings


43User Manual 1178.8236.02 ─ 04

"Preamble" If UFMC modulation is used, the first allocation is always a preamble.Preambles are required to synchronize the R&S SMBV100B andRohde & Schwarz signal analyzer.The preamble spans the entire occupied bandwidth and is located onthe first up to 3 symbols, as set with the parameter No. Sym.. Thepreamble symbols are filled with a pseudo-random sequence (PN9)and are BPSK modulated. The pseudo-random generation restarts atthe beginning of each symbol, so that the preamble symbols are iden-tical.

The remaining symbols are filled with the data source and modulatedas selected with the parameters Data Source and Modulation.To set the preamble length, use the parameter No. Sym..

Note: Do not mistake the preamble with the cyclic prefix, see "CyclicPrefix Length" on page 29.

"Pilot" If OFDM modulation is used, enables generation of pilot signals.Pilots are used by measurements with the Rohde & Schwarz signalanalyzer, for example R&S®VSE-K96.

See also:● Modulation Type > "f-OFDM".● Chapter 3.5, "Generating Configuration Files for R&S®VSE-K96",

on page 22

"Reserved" If OFDM modulation is used, you can mark allocations as reserved,so that they are perceived as general OFDM modulated signals bythe analyzer.The allocation configuration and content is user-defined. The signalgeneration is as for any other allocation content; this setting merelyaffects the content of the automatically created *.xml settings fileand hence the way the signal analyzer processes the generated sig-nal.See also Chapter 3.5, "Generating Configuration Files for R&S®VSE-K96", on page 22.

Remote command: [:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:CONTent on page 75

StateEnables the allocation.

Allocation Settings


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Remote command: [:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:STATe on page 75

ConflictIndicates a conflict, if allocations overlap.

To visualize the allocations, use the Time Plan.

Remote command: [:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:CONFlict? on page 76

4.3.3 SCMA Settings

Access:


2. Select "OFDM Signal Generation > Allocation Settings > Allocations".

3. Select "Alloc# > Modulation > SCMA".

4. Select "Data Source > Config".

The "Codebook" dialog opens.

5. Select "Layer Mapping".

Allocation Settings


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Settings:

Codebook......................................................................................................................45└ Spreading Factor K.........................................................................................45└ Codebook Size M............................................................................................45└ Number of Layers J.........................................................................................45

Layer Mapping.............................................................................................................. 46└ Layer...............................................................................................................46└ User................................................................................................................ 46└ ρ / dB...............................................................................................................46└ State................................................................................................................46

CodebookDisplays the codebook parameters.

See Figure 3-8.

Spreading Factor K ← CodebookDisplays the used spreading factor K.

Remote command: [:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:SPRead? on page 76

Codebook Size M ← CodebookDisplays the codebook size M.

Remote command: [:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:CODebook? on page 77

Number of Layers J ← CodebookDisplays the resulting number of layers J.

Allocation Settings


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The number of layers (that is also the number of codebooks) is calculated as follows:

NK

J

Where:● K is the spreading factor● N is the number of non-zero elements, see Figure 3-8.With the predefined settings, the number of layers is J = 6.

Remote command: [:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:NLAYers? on page 76

Layer MappingComprises the user to layer mapping settings:

Layer ← Layer MappingIndicates the layer number.

With the predefined settings, the number of layers is J = 6, see Number of Layers J.

User ← Layer MappingMaps the users to the layers and sets the codebook per user, see for example Fig-ure 3-9.

One user can be assigned to several layers, whereas each layer can be assigned toexact one user.

Remote command: [:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:LAYer<st0>:USER on page 78

ρ / dB ← Layer MappingProvided for future use.

Remote command: [:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:LAYer<st0>:PWR? on page 77

State ← Layer MappingEnables the individual layers (codebooks).

Remote command: [:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:LAYer<st0>:STATe on page 77

4.3.4 Time Plan

Access:



Allocation Settings


47User Manual 1178.8236.02 ─ 04

3. Select "Time Plan".

The x-axis shows allocation in the time domain, expressed in both time and num-ber of symbols. The y-axis shows the occupied subcarriers as smallest allocationgranularity in the frequency domain.

Settings:

1st Symbol.................................................................................................................... 47Symbols........................................................................................................................ 47Detach Time Plan..........................................................................................................47

1st SymbolSelects the number of the first displayed symbol.


SymbolsSets the number of displayed symbols.

The maximum number of symbols is set with the parameter Sequence Length.


Detach Time PlanOpens the time plan in a separate window.


Allocation Settings


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4.4 Trigger Settings

Access:

► Select "OFDM Signal Generation > Trigger In".

This tab provides access to the settings necessary to select and configure the trig-ger, like trigger source and mode, and to arm or trigger an internal trigger manually.The current signal generation status is displayed in the header of the tab togetherwith information on the enabled trigger mode. As in the "Marker" and "Clock" tabs,this tab provides also access to the settings of the related connectors.

This section focuses on the available settings.For information on how these settings affect the signal, refer to section "Basics on ..."in the R&S SMBV100B user manual.

Routing and enabling a triggerThe provided trigger signals are not dedicated to a particular connector. Trigger signalscan be mapped to one or more User x connectors.The provided trigger signals are not dedicated to a particular connector. Trigger signalscan be mapped to one or two User x connectors.Use the Global Connector Settings to configure the signal mapping, the polarity, thetrigger threshold and the input impedance of the input connectors.To route and enable a trigger signal, perform the following general steps:● Define the signal source and the effect of a trigger event.

Select the "Trigger In > Mode" and "Trigger In > Source".● Define the connector where the selected signal is provided.

Use the "Global Connectors" settings.

Settings:

Trigger Settings Common to All Basebands................................................................. 49└ Trigger Mode...................................................................................................49└ Signal Duration Unit........................................................................................49└ Trigger Signal Duration................................................................................... 50

Trigger Settings


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└ Running/Stopped............................................................................................ 50└ Arm................................................................................................................. 50└ Execute Trigger...............................................................................................50└ Trigger Source................................................................................................ 50└ Sync. Output to External Trigger/Sync. Output to Trigger...............................50└ External / Trigger Inhibit..................................................................................51

(External) Delay Unit..................................................................................................... 52(Specified) External Delay/(Specified) Trigger Delay....................................................52Actual Trigger Delay/Actual External Delay.................................................................. 52

Trigger Settings Common to All BasebandsTo enable simultaneous signal generation in all basebands, the R&S SMBV100B cou-ples the trigger settings in the available basebands in any instrument's configurationinvolving signal routing with signal addition. For example, in MIMO configuration, rout-ing and summing of basebands or of streams.

The icon indicates that common trigger settings are applied.

You can access and configure the common trigger source and trigger mode settings inany of the basebands. An arm or a restart trigger event applies to all basebands, too.You can still apply different delay to each of the triggers individually.

Trigger Mode ← Trigger Settings Common to All BasebandsSelects trigger mode, i.e. determines the effect of a trigger event on the signal genera-tion.● "Auto"

The signal is generated continuously.● "Retrigger"

The signal is generated continuously. A trigger event (internal or external) causes arestart.

● "Armed Auto"The signal is generated only when a trigger event occurs. Then the signal is gener-ated continuously.An "Arm" stops the signal generation. A subsequent trigger event (internal or exter-nal) causes a restart.

● "Armed Retrigger"The signal is generated only when a trigger event occurs. Then the signal is gener-ated continuously. Every subsequent trigger event causes a restart.An "Arm" stops signal generation. A subsequent trigger event (internal or external)causes a restart.

● "Single"The signal is generated only when a trigger event occurs. Then the signal is gener-ated once to the length specified at "Signal Duration".Every subsequent trigger event (internal or external) causes a restart.

Remote command: [:SOURce<hw>]:BB:OFDM[:TRIGger]:SEQuence on page 79

Signal Duration Unit ← Trigger Settings Common to All BasebandsDefines the unit for describing the length of the signal sequence to be output in the"Single" trigger mode.

Trigger Settings


50User Manual 1178.8236.02 ─ 04

Remote command: [:SOURce<hw>]:BB:OFDM:TRIGger:SLUNit on page 80

Trigger Signal Duration ← Trigger Settings Common to All BasebandsEnters the length of the signal sequence to be output in the "Single" trigger mode.

Use this parameter to output part of the signal deliberately, an exact sequence of thesignal, or a defined number of repetitions of the signal.

Remote command: [:SOURce<hw>]:BB:OFDM:TRIGger:SLENgth on page 80

Running/Stopped ← Trigger Settings Common to All BasebandsWith enabled modulation, displays the status of signal generation for all trigger modes.● "Running"

The signal is generated; a trigger was (internally or externally) initiated in triggeredmode.

● "Stopped"The signal is not generated and the instrument waits for a trigger event.

Remote command: [:SOURce<hw>]:BB:OFDM:TRIGger:RMODe? on page 80

Arm ← Trigger Settings Common to All BasebandsStops the signal generation until subsequent trigger event occurs.

Remote command: [:SOURce<hw>]:BB:OFDM:TRIGger:ARM:EXECute on page 81

Execute Trigger ← Trigger Settings Common to All BasebandsFor internal trigger source, executes trigger manually.

Remote command: [:SOURce<hw>]:BB:OFDM:TRIGger:EXECute on page 81

Trigger Source ← Trigger Settings Common to All BasebandsThe following sources of the trigger signal are available:● "Internal"

The trigger event is executed manually by the "Execute Trigger".● "External Global Trigger"

The trigger event is the active edge of an external trigger signal provided and con-figured at the User x connectors.

● "Baseband Sync In"In master-slave mode, slave instruments are triggered by the active edge of thesynchronization signal.

Remote command: [:SOURce<hw>]:BB:OFDM:TRIGger:SOURce on page 79

Sync. Output to External Trigger/Sync. Output to Trigger ← Trigger SettingsCommon to All BasebandsEnables signal output synchronous to the trigger event.● "On"

Trigger Settings


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Corresponds to the default state of this parameter.The signal calculation starts simultaneously with the trigger event. Because of theprocessing time of the instrument, the first samples are cut off and no signal is out-put. After elapsing of the internal processing time, the output signal is synchronousto the trigger event.

● "Off"The signal output begins after elapsing of the processing time. Signal output startswith sample 0. The complete signal is output.This mode is recommended for triggering of short signal sequences. Short sequen-ces are sequences with signal duration comparable with the processing time of theinstrument.

In master-slave mode, this setting ensures that once achieved, synchronization is notlost if the baseband signal sampling rate changes.

Remote command: [:SOURce<hw>]:BB:OFDM:TRIGger:EXTernal:SYNChronize:OUTPuton page 81

External / Trigger Inhibit ← Trigger Settings Common to All BasebandsApplies for external trigger signal.

Sets the duration with that any following trigger event is suppressed. In "Retrigger"mode, for example, a new trigger event does not cause a restart of the signal genera-tion until the specified inhibit duration does not expire.

For more information, see chapter "Basics" in the R&S SMBV100B user manual.

Remote command: [:SOURce<hw>]:BB:OFDM:TRIGger[:EXTernal]:INHibit on page 82

Trigger Settings


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(External) Delay UnitDetermine whatever the trigger delay is expressed in samples or directly defined as atime period (seconds).

To specify the delay, use the parameter (Specified) External Delay/(Specified) TriggerDelay.

The parameter Actual Trigger Delay/Actual External Delay displays the delay conver-ted in time.

Remote command: [:SOURce<hw>]:BB:OFDM:TRIGger:DELay:UNIT on page 81

(Specified) External Delay/(Specified) Trigger DelayThe name of the parameter and the units the delay is expressed in, changes depend-ing on the parameter (External) Delay Unit.

Delays the trigger event of the signal from:● The external trigger sourceUse this setting to:● Synchronize the instrument with the device under test (DUT) or other external devi-

ces● Compensate delays and align the signal generation start in multi-instrument setupFor more information, see chapter "Basics on ..." in the R&S SMBV100B user manual.

The parameter displays the delay converted in time.

Remote command: [:SOURce<hw>]:BB:OFDM:TRIGger[:EXTernal]:DELay on page 81[:SOURce<hw>]:BB:OFDM:TRIGger:EXTernal:TDELay on page 82

Actual Trigger Delay/Actual External DelayIndicates the resulting trigger delay in "Time" unit.

Remote command: [:SOURce<hw>]:BB:OFDM:TRIGger:EXTernal:RDELay? on page 82

Trigger Settings


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4.5 Marker Settings

Access:

► Select "OFDM Signal Generation > Marker".

This tab provides access to the settings necessary to select and configure themarker output signal, like the marker mode or marker delay settings.


Routing and enabling a markerThe provided marker signals are not dedicated to a particular connector. They can bemapped to one or more User x connectors.To route and enable a marker signal, perform the following general steps:● Define the shape of the generated marker, i.e. select the "Marker > Mode".● Define the connector where the selected signal is provided.

Use the Global Connector Settings.

Settings:

Marker Mode................................................................................................................. 53Rise/Fall Offset .............................................................................................................54Marker x Delay.............................................................................................................. 54

Marker ModeMarker configuration for up to 3 markers. The settings are used to select the markermode defining the shape and periodicity of the markers. The contents of the dialogchange with the selected marker mode; the settings are self-explanatory.

Marker Settings


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"Restart (ARB)"A marker signal is generated at the start of each ARB sequence.

Remote command: [:SOURce<hw>]:BB:OFDM:TRIGger:OUTPut<ch>:MODE on page 83

Rise/Fall OffsetShifts the rising or falling ramp of the marker by the selected number of samples. Posi-tive values shift the rising ramp to later positions; negative values shift it to earlier posi-tions.

Remote command: [:SOURce<hw>]:BB:OFDM:TRIGger:OUTPut<ch>:FOFFset on page 83[:SOURce<hw>]:BB:OFDM:TRIGger:OUTPut<ch>:ROFFset on page 83

Marker x DelayDelays the marker signal at the marker output relative to the signal generation start.

Variation of the parameter "Marker x Delay" causes signal recalculation.

Remote command: [:SOURce<hw>]:BB:OFDM:TRIGger:OUTPut<ch>:DELay on page 84

4.6 Clock Settings

Access:

► Select "OFDM Signal Generation > Clock".

This tab provides access to the settings necessary to select and configure theclock signal, like the clock source and clock mode.


Clock Settings


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Defining the clockThe provided clock signals are not dedicated to a particular connector. They can bemapped to one or more User x connectors.Use the Global Connector Settings to configure the signal mapping, the polarity, thetrigger threshold, and the input impedance of the input connectors.To route and enable a trigger signal, perform the following general steps:● Define the signal source, that is select the "Clock > Source".● Define the connector where the selected signal is provided.

Use the Global Connector Settings.

Settings:

Clock Source.................................................................................................................55

Clock SourceSelects the clock source.● "Internal"

The instrument uses its internal clock reference.

Remote command: [:SOURce<hw>]:BB:OFDM:CLOCk:SOURce on page 84

4.7 Global Connector Settings

Each of the "Trigger In", "Marker" and "Clock" dialogs as well as the "Trigger MarkerClock" dialog provides a quick access to the related connector settings.

See also chapter "Global Connector Settings" in the user manual.

Global Connector Settings

Remote-Control CommandsR&S®SMBVB-K114

56User Manual 1178.8236.02 ─ 04

5 Remote-Control CommandsThe following commands are required to perform signal generation with the optionR&S SMBV100B-K114 in a remote environment. We assume that the R&S SMBV100Bhas already been set up for remote operation in a network as described in theR&S SMBV100B documentation. A knowledge about the remote control operation andthe SCPI command syntax are assumed.

Conventions used in SCPI command descriptionsFor a description of the conventions used in the remote command descriptions, seesection "Remote Control Commands" in the R&S SMBV100B user manual.

Common Suffixes

The following common suffixes are used in the remote commands:

Suffix Value range Description

ENTity<ch> 1 Optional keyword, provided for compatibility withR&S®SMW200A

ENTity1:SOURce1 = SOURce1

SOURce<hw> 1 Available baseband signals

OUTPut<ch> 1 to 3 Available markers

USER<ch> 0 to 5 Available users

ALLoc<ch0> 0 to 30 Number of allocations

Programming examples

This description provides simple programming examples. The purpose of the examplesis to present all commands for a given task. In real applications, one would ratherreduce the examples to an appropriate subset of commands.

The programming examples have been tested with a software tool which provides anenvironment for the development and execution of remote tests. To keep the exampleas simple as possible, only the "clean" SCPI syntax elements are reported. Non-exe-cutable command lines (e.g. comments) start with two // characters.

At the beginning of the most remote control program, an instrument (p)reset is recom-mended to set the instrument to a definite state. The commands *RST andSYSTem:PRESet are equivalent for this purpose. *CLS also resets the status registersand clears the output buffer.

The following commands specific to the R&S SMBV100B-K114 option are describedhere:

● General Commands................................................................................................57● Physical Settings Commands................................................................................. 60● Filter Commands.....................................................................................................64● Modulation Commands........................................................................................... 67


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● User Commands..................................................................................................... 68● Allocation Commands............................................................................................. 70● SCMA Commands.................................................................................................. 76● Trigger Commands................................................................................................. 78● Marker Commands..................................................................................................83● Clock Commands....................................................................................................84

5.1 General Commands

Example: Storing current configurationSOURce1:BB:OFDM:SETTing:STORe "/var/user/5g_ufmc_scma"*RSTSOURce1:BB:OFDM:SETTing:CATalog?// 5g_ufmc_scma, 5gSOURce1:BB:OFDM:SETTing:LOAD "/var/user/5g_ufmc_scma"SOURce1:BB:OFDM:NALLoc?// 6SOURce1:BB:OFDM:SETTing:DEL "5g"

Example: Saving a configuration to an *.xml fileSOURce1:BB:OFDM:MODulation OFDMSOURce1:BB:OFDM:OUTPath "/var/user/K114-Export/"SOURce1:BB:OFDM:STATe ON// Query the created *.xml file.SOURce1:BB:OFDM:OUTPath? "/var/user/K114-Export/Exported_K114_settings_K96"

[:SOURce<hw>]:BB:OFDM:STATe..................................................................................... 57[:SOURce<hw>]:BB:OFDM:PRESet...................................................................................58[:SOURce<hw>]:BB:OFDM:SETTing:CATalog.....................................................................58[:SOURce<hw>]:BB:OFDM:SETTing:LOAD........................................................................ 58[:SOURce<hw>]:BB:OFDM:SETTing:STORe...................................................................... 58[:SOURce<hw>]:BB:OFDM:SETTing:DEL...........................................................................59[:SOURce<hw>]:BB:OFDM:WAVeform:CREate...................................................................59[:SOURce<hw>]:BB:OFDM:MODulation............................................................................. 59[:SOURce<hw>]:BB:OFDM:MODPreset............................................................................. 59[:SOURce<hw>]:BB:OFDM:OUTPath.................................................................................59[:SOURce<hw>]:BB:OFDM:SRATe:VARiation..................................................................... 60

[:SOURce<hw>]:BB:OFDM:STATe <State>

Activates the standard.

Parameters:<State> 0 | 1 | OFF | ON

*RST: 0

Example: See Example "Generating a UFMC waveform" on page 70.

General Commands


58User Manual 1178.8236.02 ─ 04

Manual operation: See "State" on page 25

[:SOURce<hw>]:BB:OFDM:PRESet

Sets the parameters of the digital standard to their default values (*RST values speci-fied for the commands).

Not affected is the state set with the command SOURce<hw>:BB:OFDM:STATe.


Usage: Event

Manual operation: See "Set to Default" on page 25

[:SOURce<hw>]:BB:OFDM:SETTing:CATalog

Queries the files with settings in the default directory. Listed are files with the file exten-sion *.c5g.

Example: See Example "Storing current configuration" on page 57.

Manual operation: See "Save/Recall" on page 25

[:SOURce<hw>]:BB:OFDM:SETTing:LOAD <Filename>

Loads the selected file from the default or the specified directory. Loaded are files withextension *.c5g.

Parameters:<Filename> string

file name or complete file path; file extension can be omitted



[:SOURce<hw>]:BB:OFDM:SETTing:STORe <Filename>

Stores the current settings into the selected file; the file extension (*.c5g) is assignedautomatically.


file name or complete file path



General Commands


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[:SOURce<hw>]:BB:OFDM:SETTing:DEL <Filename>

Deletes the selected file from the default or specified directory. Deleted are files withthe file extension *.c5g.


file name or complete file path; file extension can be omitted



[:SOURce<hw>]:BB:OFDM:WAVeform:CREate <Filename>

Stores the current settings as an ARB signal in a waveform file (*.wv).


file name or complete file path; file extension is assigned auto-matically


Manual operation: See "Generate Waveform File" on page 25

[:SOURce<hw>]:BB:OFDM:MODulation <ModType>

Selects the modulation type.

Parameters:<ModType> UFMC | FBMC | GFDM | FOFDm | OFDM

*RST: OFDM


Manual operation: See "Modulation Type" on page 26

[:SOURce<hw>]:BB:OFDM:MODPreset

Calls the default settings for the selected moduilation type, see [:SOURce<hw>]:BB:OFDM:MODulation on page 59.


Usage: Event

Manual operation: See "Set to Modulation Default" on page 27

[:SOURce<hw>]:BB:OFDM:OUTPath <K114OutputPath>

Specifies the output path and output file of the exported OFDM signal generation set-tings.

General Commands


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By default, the output path /var/user/K114-Export and output fileExported_K114_settings_K96.xml is specified.

See also Example "Default "Exported_K114_settings_K96.xml" file" on page 85.

Parameters:<K114OutputPath> string

Example: See Example "Saving a configuration to an *.xml file"on page 57.

Manual operation: See "Export path for XML settings" on page 26

[:SOURce<hw>]:BB:OFDM:SRATe:VARiation <SymRateVar>

Sets the symbol rate variation of the signal.

Parameters:<SymRateVar> float

Range: 400 to 4E7Increment: 1E-3*RST: 15.360000E6


5.2 Physical Settings Commands

[:SOURce<hw>]:BB:OFDM:NSUBcarriers.......................................................................... 60[:SOURce<hw>]:BB:OFDM:NOCCupied.............................................................................61[:SOURce<hw>]:BB:OFDM:SCSPace................................................................................ 61[:SOURce<hw>]:BB:OFDM:SEQLength..............................................................................61[:SOURce<hw>]:BB:OFDM:CPLength................................................................................61[:SOURce<hw>]:BB:OFDM:ACPLength..............................................................................62[:SOURce<hw>]:BB:OFDM:ACPSymbols........................................................................... 62[:SOURce<hw>]:BB:OFDM:CPSYmbols.............................................................................62[:SOURce<hw>]:BB:OFDM:SAMPling?.............................................................................. 62[:SOURce<hw>]:BB:OFDM:BWOCcupied?.........................................................................63[:SOURce<hw>]:BB:OFDM:LGUard?................................................................................. 63[:SOURce<hw>]:BB:OFDM:RGUard?.................................................................................63

[:SOURce<hw>]:BB:OFDM:NSUBcarriers <NoOfSubCarr>

Sets the number of available subcarriers.

Parameters:<NoOfSubCarr> integer

Range: 64 to 16384*RST: 64


Physical Settings Commands


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Manual operation: See "Total Number Of Subcarriers" on page 28

[:SOURce<hw>]:BB:OFDM:NOCCupied <NumOccSc>

Sets the number of occupied subcarriers.

Parameters:<NumOccSc> integer

Range: 1 to 13107*RST: 53


Manual operation: See "Occupied Number of Subcarriers" on page 28

[:SOURce<hw>]:BB:OFDM:SCSPace <SubCarSp>

Sets the frequency distance between the carrier frequencies of the subcarriers.

Parameters:<SubCarSp> float

Range: 0.001 to 2Increment: 1E-6*RST: 0.3125Default unit: MHz


Manual operation: See "Subcarrier Spacing" on page 29

[:SOURce<hw>]:BB:OFDM:SEQLength <SeqLen>

Sets the sequence length of the signal in number of symbols.

Parameters:<SeqLen> integer



Manual operation: See "Sequence Length" on page 29

[:SOURce<hw>]:BB:OFDM:CPLength <CpLength>

Sets the cyclic prefix length as number of samples.

Parameters:<CpLength> integer




62User Manual 1178.8236.02 ─ 04


Example: See also [:SOURce<hw>]:BB:OFDM:ACPLengthon page 62.

Manual operation: See "Cyclic Prefix Length" on page 29

[:SOURce<hw>]:BB:OFDM:ACPLength <CpLength>

For f-OFDM/OFDM, enables additional alternative CP.

Parameters:<CpLength> integer


Example: SOURce1:BB:OFDM:MODulation FOFDSOURce1:BB:OFDM:NSUBcarriers 512SOURce1:BB:OFDM:NOCCupied 400SOURce1:BB:OFDM:SCSPace 0.05SOURce1:BB:OFDM:SEQLength 8

SOURce1:BB:OFDM:CPLength1 160SOURce1:BB:OFDM:CPSYmbols1 1SOURce1:BB:OFDM:CPLength2 144SOURce1:BB:OFDM:CPSYmbols2 7// the CP in the first symbol is 1600 samples long// the other 7 symbols use a CP with 144 samples

Manual operation: See "Alt. Cyclic Prefix Length" on page 30

[:SOURce<hw>]:BB:OFDM:ACPSymbols <CPSymbols>[:SOURce<hw>]:BB:OFDM:CPSYmbols <CPSymbols>

For f-OFDM/OFDM, defines number of symbols on that the cyclic prefix/the alternativecyclic prefix is applied.

Parameters:<CPSymbols> integer


Example: See [:SOURce<hw>]:BB:OFDM:ACPLength on page 62.

Manual operation: See "CP No. Symbols/Alt. CP No. Symbols" on page 31

[:SOURce<hw>]:BB:OFDM:SAMPling?

Queries the sampling rate.



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Return values: <SampRate> float



Usage: Query only

Manual operation: See "Sampling Rate" on page 31

[:SOURce<hw>]:BB:OFDM:BWOCcupied?

Queries the occupied bandwidth.

Return values: <OccBw> float



Usage: Query only

Manual operation: See "Occupied Bandwidth" on page 31

[:SOURce<hw>]:BB:OFDM:LGUard?

Queries the number of left guard subcarriers.

Return values: <LeftGuardSC> integer



Usage: Query only

Manual operation: See "Number Of Left/Right Guard Subcarriers" on page 32

[:SOURce<hw>]:BB:OFDM:RGUard?

Queries the number of right guard subcarriers.

Return values: <RightGuardSC> integer




64User Manual 1178.8236.02 ─ 04


Usage: Query only

Manual operation: See "Number Of Left/Right Guard Subcarriers" on page 32

5.3 Filter Commands

Example: Filter settingsSOURce1:BB:OFDM:MODulation FOFDSOURce1:BB:OFDM:FILTer:LENGth 74SOURce1:BB:OFDM:FILTer:WINDowing HANNSOURce1:BB:OFDM:FILTer:CUTTrans 1

SOURce1:BB:OFDM:MODulation GFDMSOURce1:BB:OFDM:FILTer:TYPE?// DIRSOURce1:BB:OFDM:FILTer:ROLLoff?// 0.1SOURce1:BB:OFDM:FILTer:TYPE USERSOURce1:BB:OFDM:FILTer:UCATalog?// my_filterSOURce1:BB:OFDM:FILTer:USELection "/var/user/my_filter.dat"

[:SOURce<hw>]:BB:OFDM:FILTer:TYPE............................................................................64[:SOURce<hw>]:BB:OFDM:FILTer:ROLLoff........................................................................ 65[:SOURce<hw>]:BB:OFDM:FILTer:LENGth.........................................................................65[:SOURce<hw>]:BB:OFDM:FILTer:SBATtenuation...............................................................65[:SOURce<hw>]:BB:OFDM:FILTer:CUTTrans......................................................................65[:SOURce<hw>]:BB:OFDM:FILTer:WINDowing................................................................... 66[:SOURce<hw>]:BB:OFDM:FILTer:UCATalog?.................................................................... 66[:SOURce<hw>]:BB:OFDM:FILTer:USELection................................................................... 66[:SOURce<hw>]:BB:OFDM:FILTer:ULENgth?......................................................................66

[:SOURce<hw>]:BB:OFDM:FILTer:TYPE <FilterType>

Sets the baseband filter type.

Parameters:<FilterType> RC | RRC | DIRichlet | RECT | DCH | STRunc | USER |

PHYDyas | NONE*RST: DCH


Manual operation: See "Filter Type" on page 33

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[:SOURce<hw>]:BB:OFDM:FILTer:ROLLoff <RollOff>

Sets the filter parameter.

Parameters:<RollOff> float

Range: 0 to 1Increment: 0.001*RST: 0.1

Example: See Example "Filter settings" on page 64.

Manual operation: See "Rolloff Factor" on page 34

[:SOURce<hw>]:BB:OFDM:FILTer:LENGth <FilterLength>

Sets the filter length.

Parameters:<FilterLength> integer

Range: 1 to 800*RST: Deppends on the filter type


Manual operation: See "Filter Length" on page 34

[:SOURce<hw>]:BB:OFDM:FILTer:SBATtenuation <StBAttenuation>

Sets the attenuation in the filter stop band.

Parameters:<StBAttenuation> float

Range: 10 to 120Increment: 0.001*RST: 60


Manual operation: See "Stopband Attenuation" on page 34

[:SOURce<hw>]:BB:OFDM:FILTer:CUTTrans <CutTransResp>

Cuts the transient response of the filtering operation at the beginning and end of thesignal.

Parameters:<CutTransResp> 0 | 1 | OFF | ON

*RST: 0


Manual operation: See "Cut Transient Response" on page 35

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[:SOURce<hw>]:BB:OFDM:FILTer:WINDowing <Windowing>

Sets the windowing method.

Parameters:<Windowing> NONE | HANNing | HAMMing

*RST: HANNing


Manual operation: See "Windowing Method" on page 34

[:SOURce<hw>]:BB:OFDM:FILTer:UCATalog?

Queries the user filetr files in the default directory. Only files with the file extension*.dat are listed.


Usage: Query only

Manual operation: See "Load User Filter" on page 35

[:SOURce<hw>]:BB:OFDM:FILTer:USELection <UserSel>

Loads the selected file from the default or the specified directory. Loaded are files withextension *.dat.

Parameters:<UserSel> string

complete file path incl file name and file extenssion


Manual operation: See "Load User Filter" on page 35

[:SOURce<hw>]:BB:OFDM:FILTer:ULENgth?

Queries the filter length.

Return values: <UserFilterLen> integer



Usage: Query only

Manual operation: See "User Filter Length" on page 35

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5.4 Modulation Commands

[:SOURce<hw>]:BB:OFDM:SUBCarriers?.......................................................................... 67[:SOURce<hw>]:BB:OFDM:GFDM:DBSYmbols.................................................................. 67[:SOURce<hw>]:BB:OFDM:FOFDm:NSUBand................................................................... 67[:SOURce<hw>]:BB:OFDM:UFMC:NSUBand......................................................................67[:SOURce<hw>]:BB:OFDM:UFMC:PREequal..................................................................... 68

[:SOURce<hw>]:BB:OFDM:SUBCarriers?

Queries the number of subcarriers per subband.

Return values: <SubcPerSubband> integer



Usage: Query only

Manual operation: See "Subcarriers per Subband" on page 36

[:SOURce<hw>]:BB:OFDM:GFDM:DBSYmbols <GFDMDbSymbols>

Sets data block size in terms of symbols per data block.

Parameters:<GFDMDbSymbols> integer


Example: SOURce1:BB:OFDM:GFDM:DBSYmbols 8Manual operation: See "Data Block Size" on page 36

[:SOURce<hw>]:BB:OFDM:FOFDm:NSUBand <FofdmNSubands>

Sets the number of f-OFDM sub-bands.

Parameters:<FofdmNSubands> integer


Example: SOURce1:BB:OFDM:FOFDm:NSUBand 34

Manual operation: See "Number of Sub-bands" on page 36

[:SOURce<hw>]:BB:OFDM:UFMC:NSUBand <NSubbands>

Sets the number of UFMC sub-bands.

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Parameters:<NSubbands> integer



Manual operation: See "Number of Sub-bands" on page 36

[:SOURce<hw>]:BB:OFDM:UFMC:PREequal <UfmcPreEqual>

Applies a filter pre-equalization.

Parameters:<UfmcPreEqual> 0 | 1 | OFF | ON

*RST: 0


Manual operation: See "Subband Filter Pre-equalization" on page 36

5.5 User Commands

[:SOURce<hw>]:BB:OFDM:USER<ch0>:DATA................................................................... 68[:SOURce<hw>]:BB:OFDM:USER<ch0>:LIST.....................................................................68[:SOURce<hw>]:BB:OFDM:USER<ch0>:PATTern............................................................... 69[:SOURce<hw>]:BB:OFDM:USER<ch0>:PWR....................................................................69[:SOURce<hw>]:BB:OFDM:USER<ch0>:STATe.................................................................. 69

[:SOURce<hw>]:BB:OFDM:USER<ch0>:DATA <Datasource>

Sets the data source per user.

Parameters:<Datasource> PN9 | PN11 | PN15 | PN16 | PN20 | PN21 | PN23 | PATTern |

DLISt | ZERO | ONE*RST: PN16


Manual operation: See "Data Source" on page 38

[:SOURce<hw>]:BB:OFDM:USER<ch0>:LIST <DataList>

Selects an existing data list file from the default directory or from the specific directory.

Parameters:<DataList> string

file name incl. file extension or complete file path


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[:SOURce<hw>]:BB:OFDM:USER<ch0>:PATTern <Pattern>, <BitCount>

Sets a bit pattern as a data source.

Parameters:<Pattern> numeric

*RST: #H0

<BitCount> integerRange: 1 to 64*RST: 1



[:SOURce<hw>]:BB:OFDM:USER<ch0>:PWR <Power>

Applies a power offset.

Parameters:<Power> float

Range: -80 to 10Increment: 1E-3*RST: 0


Manual operation: See "ρ / dB" on page 39

[:SOURce<hw>]:BB:OFDM:USER<ch0>:STATe <State>

Activates the user.


*RST: 1



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5.6 Allocation Commands

Example: Generating a UFMC waveform*RST

SOURce1:BB:OFDM:PRESetSOURce1:BB:OFDM:MODulation UFMC// SOURce1:BB:OFDM:MODPresetSOURce1:BB:OFDM:NSUBcarriers 512SOURce1:BB:OFDM:NOCCupied 408SOURce1:BB:OFDM:SCSPace 0.05SOURce1:BB:OFDM:SEQLength 8SOURce1:BB:OFDM:CPLength 10SOURce1:BB:OFDM:RGUard?// 52SOURce1:BB:OFDM:LGUard?// 52SOURce1:BB:OFDM:BWOCcupied?// 20.4SOURce1:BB:OFDM:SAMPling?// 25.6SOURce1:BB:OFDM:SRATe:VARiation?// 15360000

SOURce1:BB:OFDM:FILTer:TYPE DCHSOURce1:BB:OFDM:FILTer:LENGth 74SOURce1:BB:OFDM:FILTer:SBATtenuation 60SOURce1:BB:OFDM:UFMC:NSUBand 34SOURce1:BB:OFDM:SUBCarriers?// 12SOURce1:BB:OFDM:UFMC:PREequal?// 0

// User settingsSOURce1:BB:OFDM:USER0:DATA PN23SOURce1:BB:OFDM:USER0:PWR 1SOURce1:BB:OFDM:USER0:STATe 0SOURce1:BB:OFDM:USER0:STATe 1// file 5g_datalist.dm_iqd must exsist in the default directorySOURce1:BB:OFDM:USER2:DATA DLISSOURce1:BB:OFDM:USER2:LIST "/var/user/5g_datalist.dm_iqd"SOURce1:BB:OFDM:USER4:DATA PATTSOURce1:BB:OFDM:USER4:PATTern #H1C4A9,17SOURce1:BB:OFDM:USER4:STATe 0

// Allocation settingsSOURce1:BB:OFDM:NALLoc 6SOURce1:BB:OFDM:ALLoc0:CONTent?

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// PRESOURce1:BB:OFDM:ALLoc0:SYNO 2SOURce1:BB:OFDM:ALLoc1:CONTent?// DATASOURce1:BB:OFDM:ALLoc1:MODulation QAM256SOURce1:BB:OFDM:ALLoc1:SCNO 100SOURce1:BB:OFDM:ALLoc1:SCOFfset 2SOURce1:BB:OFDM:ALLoc1:SYOFfset 2SOURce1:BB:OFDM:ALLoc1:DATA USER0SOURce1:BB:OFDM:ALLoc1:PHYSbits?// 4000SOURce1:BB:OFDM:ALLoc1:STATe 1SOURce1:BB:OFDM:ALLoc2:SCNO 200SOURce1:BB:OFDM:ALLoc2:SYNO 2SOURce1:BB:OFDM:ALLoc2:SCOFfset 150SOURce1:BB:OFDM:ALLoc2:SYOFfset 2SOURce1:BB:OFDM:ALLoc2:DATA USER3SOURce1:BB:OFDM:ALLoc3:MODulation SCMASOURce1:BB:OFDM:ALLoc3:SCNO 200SOURce1:BB:OFDM:ALLoc3:SYNO 2SOURce1:BB:OFDM:ALLoc3:SCOFfset 208SOURce1:BB:OFDM:ALLoc3:SYOFfset 4SOURce1:BB:OFDM:ALLoc3:PWR 3SOURce1:BB:OFDM:ALLoc4:CONFlict?// 1SOURce1:BB:OFDM:ALLoc4:SCNO 90SOURce1:BB:OFDM:ALLoc4:SYNO 3SOURce1:BB:OFDM:ALLoc4:SCOFfset 110SOURce1:BB:OFDM:ALLoc4:SYOFfset 4SOURce1:BB:OFDM:ALLoc4:DATA USER5SOURce1:BB:OFDM:ALLoc5:MODulation SCMASOURce1:BB:OFDM:ALLoc5:SCNO 252SOURce1:BB:OFDM:ALLoc5:SCOFfset 90SOURce1:BB:OFDM:ALLoc5:SYOFfset 7SOURce1:BB:OFDM:ALLoc3:SCMA:CODebook?// 4SOURce1:BB:OFDM:ALLoc3:SCMA:NLAYers?// 6SOURce1:BB:OFDM:ALLoc3:SCMA:SPRead?// 4SOURce1:BB:OFDM:ALLoc3:SCMA:LAYer1:USER USER1SOURce1:BB:OFDM:ALLoc3:SCMA:LAYer1:STATe 0SOURce1:BB:OFDM:ALLoc3:SCMA:LAYer1:PWR?// 0SOURce1:BB:OFDM:ALLoc3:SCMA:LAYer2:STATe 0SOURce1:BB:OFDM:ALLoc3:SCMA:LAYer4:STATe 0SOURce1:BB:OFDM:ALLoc5:SCMA:LAYer0:STATe 0SOURce1:BB:OFDM:ALLoc5:SCMA:LAYer3:STATe 0SOURce1:BB:OFDM:ALLoc5:SCMA:LAYer5:STATe 0SOURce1:BB:OFDM:ALLoc4:CONFlict?

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// 0SOURce1:BB:OFDM:ALLoc5:CONFlict?// 0

SOURce1:BB:OFDM:STATeSOURce1:BB:OFDM:WAVeform:CREate "/var/user/5g_ufmc.wv"

[:SOURce<hw>]:BB:OFDM:NALLoc...................................................................................72[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:MODulation.......................................................... 72[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCNO..................................................................73[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SYNO.................................................................. 73[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCOFfset.............................................................73[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SYOFfset............................................................. 73[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:PHYSbits?............................................................74[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:DATA................................................................... 74[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:LIST.................................................................... 74[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:PATTern............................................................... 74[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:CIQFile................................................................ 75[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:PWR....................................................................75[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:CONTent..............................................................75[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:STATe..................................................................75[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:CONFlict?............................................................ 76

[:SOURce<hw>]:BB:OFDM:NALLoc <NoOfAlloc>

Sets the number of scheduled allocations.

Parameters:<NoOfAlloc> integer



Manual operation: See "Number of Allocations" on page 40

[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:MODulation <BaseModType>

Sets the modulation type of an allocation.

Parameters:<BaseModType> BPSK | QPSK | QAM16 | QAM64 | QAM256 | SCMA | CIQ

CIQCustom IQ data file, loaded with the command [:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:CIQFile.

*RST: QPSK


Manual operation: See "Modulation" on page 41

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[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCNO <NoOfSubcarriers>

Sets the number of allocated subcarriers.

Parameters:<NoOfSubcarriers> integer



Manual operation: See "No. SC" on page 41

[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SYNO <NoOfSymbols>

Sets the allocation size as number of symbols.

Parameters:<NoOfSymbols> integer



Manual operation: See "No. Sym." on page 41

[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCOFfset <ScOffset>

Sets the start subcarrier of the selected allocation.

Parameters:<ScOffset> integer



Manual operation: See "Offset SC" on page 41

[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SYOFfset <SymOffset>

Sets the start symbol of the selected allocation.

Parameters:<SymOffset> integer



Manual operation: See "Offset Sym." on page 41

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[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:PHYSbits?

Queries the allocation size in bits.

Return values: <PhysicalBits> integer


Usage: Query only

Manual operation: See "Phys Bits" on page 41

[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:DATA <Datasource>

Selects the data source for the selected allocation.

Parameters:<Datasource> USER1 | USER2 | USER3 | USER4 | PN9 | PN11 | PN15 |

PN16 | PN20 | PN21 | PN23 | PATTern | DLISt | ZERO | ONE |USER5 | USER0*RST: PN16



[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:LIST <DataList>

Selects an existing data list file from the default directory or from the specific directory.

Parameters:<DataList> string

file name incl. file extension or complete file path



[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:PATTern <Pattern>, <BitCount>

Sets a bit pattern as data source.

Parameters:<Pattern> numeric

*RST: #H0

<BitCount> integerRange: 1 to 64*RST: 1



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[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:CIQFile <CustomIqFile>

Selects an existing file wit hcustom I/Q data from the default directory or from the spe-cific directory.

Parameters:<CustomIqFile> string

Filename incl. file extension or complete file path

Example: SOURce1:BB:OFDM:NALLoc 1SOURce1:BB:OFDM:ALLoc0:MODulation CIQSOURce1:BB:OFDM:ALLoc0:CIQFile "/var/user/iq.iqw"


[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:PWR <Power>

Applies a power offset to the allocation relative to the others.

Parameters:<Power> float




[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:CONTent <ContentType>

Sets the content type.

Parameters:<ContentType> DATA | PREamble | PILot | REServed

DATADefault value for FBMC and GFDM modulations.PREambleDefault value for the first allocation of the UFMC modulation.DATA|PILot|REServedSelects the content type for f-OFDM/OFDM modulations.*RST: DATA


Manual operation: See "Content Type" on page 42

[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:STATe <State>

Enables the allocation.

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*RST: 0



[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:CONFlict?

Returns 1, if allocations overlap.

Return values: <Conflict> 0 | 1 | OFF | ON


Usage: Query only

Manual operation: See "Conflict" on page 44

5.7 SCMA Commands

[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:NLAYers?...................................................76[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:SPRead?................................................... 76[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:CODebook?............................................... 77[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:LAYer<st0>:PWR?...................................... 77[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:LAYer<st0>:STATe...................................... 77[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:LAYer<st0>:USER...................................... 78

[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:NLAYers?

Queires the number of layers.

Return values: <NoOfLayers> integer



Usage: Query only

Manual operation: See "Number of Layers J" on page 45

[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:SPRead?

Queries the spreading factor.

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Return values: <SpreadFac> integer



Usage: Query only

Manual operation: See "Spreading Factor K" on page 45

[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:CODebook?

Queries the codebook size.

Return values: <Codebook> integer



Usage: Query only

Manual operation: See "Codebook Size M" on page 45

[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:LAYer<st0>:PWR?

Applies a power offset to the selected layer relative to the others.

Return values: <Power> float



Usage: Query only


[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:LAYer<st0>:STATe <State>

Enables the layer (codebook).


*RST: 0



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[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:LAYer<st0>:USER<ScmaLayerUser>

Maps the users to the layers.

Parameters:<ScmaLayerUser> USER0 | USER1 | USER2 | USER3 | USER4 | USER5

*RST: USER0


Manual operation: See "User" on page 46

5.8 Trigger Commands

Example: Configure and enable triggeringSOURce:BB:OFDM:TRIGger:SEQuence SINGleSOURce:BB:OFDM:TRIGger:SLENgth 200

// the first 200 samples of the current waveform will be output after // the next trigger event// SOURce:BB:OFDM:TRIGger:SEQuence ARETrigger// SOURce:BB:OFDM:TRIGger:SOURce EGT1// external trigger signal must be provided at the USER connector// SOURce:BB:OFDM:TRIGger:EXTernal:SYNChronize:OUTPut ON// SOURce:BB:OFDM:TRIGger:EXTernal:DELay 200// SOURce:BB:OFDM:TRIGger:EXTernal:INHibit 100

// SOURce:BB:OFDM:TRIGger:SOURce INTB// the internal trigger signal from the other path must be used// SOURce:BB:OFDM:TRIGger:OBASeband:DELay 25// SOURce:BB:OFDM:TRIGger:OBASeband:INHibit 10

SOURce:BB:OFDM:TRIGger:SEQuence AAUToSOURce:BB:OFDM:TRIGger:SOURce INTernalSOURce:BB:OFDM:STAT ONSOURce:BB:OFDM:TRIGger:EXEC

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Example: Specifying delay and inhibit values in time unitsSOURce1:BB:OFDM:CLOCk 1000000SOURce1:BB:OFDM:TRIGger:SEQuence AAUTSOURce1:BB:OFDM:TRIGger:SOURce EGT1SOURce1:BB:OFDM:TRIGger:DELay:UNIT SAMPSOURce1:BB:OFDM:TRIGger:EXTernal:DELay 100SOURce1:BB:OFDM:TRIGger:EXTernal:RDELay?// Response: 100

SOURce1:BB:OFDM:TRIGger:DELay:UNIT TIMESOURce1:BB:OFDM:TRIGger:EXTernal:TDELay 0.00001SOURce1:BB:OFDM:TRIGger:EXTernal:RDELay?// Response: 0.00001

SOURce1:BB:OFDM:TRIGger:DELay:UNIT SAMPSOURce1:BB:OFDM:TRIGger:EXTernal:DELay 10

[:SOURce<hw>]:BB:OFDM[:TRIGger]:SEQuence................................................................79[:SOURce<hw>]:BB:OFDM:TRIGger:SOURce.................................................................... 79[:SOURce<hw>]:BB:OFDM:TRIGger:RMODe?................................................................... 80[:SOURce<hw>]:BB:OFDM:TRIGger:SLENgth.................................................................... 80[:SOURce<hw>]:BB:OFDM:TRIGger:SLUNit.......................................................................80[:SOURce<hw>]:BB:OFDM:TRIGger:EXECute....................................................................81[:SOURce<hw>]:BB:OFDM:TRIGger:ARM:EXECute............................................................81[:SOURce<hw>]:BB:OFDM:TRIGger:EXTernal:SYNChronize:OUTPut...................................81[:SOURce<hw>]:BB:OFDM:TRIGger:DELay:UNIT...............................................................81[:SOURce<hw>]:BB:OFDM:TRIGger[:EXTernal]:DELay....................................................... 81[:SOURce<hw>]:BB:OFDM:TRIGger:EXTernal:TDELay....................................................... 82[:SOURce<hw>]:BB:OFDM:TRIGger:EXTernal:RDELay?..................................................... 82[:SOURce<hw>]:BB:OFDM:TRIGger[:EXTernal]:INHibit....................................................... 82

[:SOURce<hw>]:BB:OFDM[:TRIGger]:SEQuence <TrigMode>

Sets the trigger mode.

Parameters:<TrigMode> AUTO | RETRigger | AAUTo | ARETrigger | SINGle

*RST: AUTO

Example: See Example "Configure and enable triggering" on page 78.

Manual operation: See "Trigger Mode" on page 49

[:SOURce<hw>]:BB:OFDM:TRIGger:SOURce <TrigSource>

Selects the trigger signal source and determines the way the triggering is executed.Provided are:● Internal triggering by a command (INTernal)● External trigger signal via one of the User x connectors

– EGT1: External global trigger

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– EGC1: External global clock● In master-slave mode, the external baseband synchronization signal (BBSY)● EXTernal: Setting only

Provided only for backward compatibility with other Rohde & Schwarz signal gener-ators.The R&S SMBV100B accepts this value and maps it automatically as follows:EXTernal = EGT1

Parameters:<TrigSource> INTernal|EGT1|EGC1|EXTernal|BBSY

*RST: INTernal


Manual operation: See "Trigger Source" on page 50

[:SOURce<hw>]:BB:OFDM:TRIGger:RMODe?

Queries the status of waveform output.

Return values: <TrigRunMode> STOP | RUN

*RST: STOP


Usage: Query only

Manual operation: See "Running/Stopped" on page 50

[:SOURce<hw>]:BB:OFDM:TRIGger:SLENgth <TrigSeqLen>

Defines the length of the signal sequence to be output in the SINGle trigger mode.

Parameters:<TrigSeqLen> integer

Range: 1 to dynamic*RST: 1


Manual operation: See "Trigger Signal Duration" on page 50

[:SOURce<hw>]:BB:OFDM:TRIGger:SLUNit <TrigSeqLenUnit>

Defines the unit for the entry of the length of the signal sequence to be output in theSINGle trigger mode.

Parameters:<TrigSeqLenUnit> SEQuence | SAMPle

*RST: SEQuence


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Manual operation: See "Signal Duration Unit" on page 49

[:SOURce<hw>]:BB:OFDM:TRIGger:EXECute

Executes an internal trigger event.


Usage: Event

Manual operation: See "Execute Trigger" on page 50

[:SOURce<hw>]:BB:OFDM:TRIGger:ARM:EXECute

Stops (arms) waveform output.


Usage: Event

Manual operation: See "Arm" on page 50

[:SOURce<hw>]:BB:OFDM:TRIGger:EXTernal:SYNChronize:OUTPut<TrigSyncOutpSta>

Enables signal output synchronous to the trigger event.

Parameters:<TrigSyncOutpSta> 0 | 1 | OFF | ON

*RST: 1


Manual operation: See "Sync. Output to External Trigger/Sync. Output to Trigger"on page 50

[:SOURce<hw>]:BB:OFDM:TRIGger:DELay:UNIT <TrigDelUnit>

Determines the units the trigger delay is expressed in.

Parameters:<TrigDelUnit> SAMPle | TIME

*RST: SAMPle

Example: See Example "Specifying delay and inhibit values in time units"on page 79.

Manual operation: See "(External) Delay Unit" on page 52

[:SOURce<hw>]:BB:OFDM:TRIGger[:EXTernal]:DELay <TrigExtDelay>

Specifies the trigger delay.

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Parameters:<TrigExtDelay> float

Range: 0 to 2147483647Increment: 0.01*RST: 0


Manual operation: See "(Specified) External Delay/(Specified) Trigger Delay"on page 52

[:SOURce<hw>]:BB:OFDM:TRIGger:EXTernal:TDELay <TrigExtTimeDel>

Specifies the trigger delay for external triggering. The value affects all external triggersignals.

Parameters:<TrigExtTimeDel> float

Range: 0 to 688Increment: 250E-12*RST: 0Default unit: s


Manual operation: See "(Specified) External Delay/(Specified) Trigger Delay"on page 52

[:SOURce<hw>]:BB:OFDM:TRIGger:EXTernal:RDELay?

Queries the time (in seconds) an external trigger event is delayed for.

Return values: <ResExtDelaySec> float

Range: 0 to 688Increment: 250E-12*RST: 0


Usage: Query only

Manual operation: See "Actual Trigger Delay/Actual External Delay" on page 52

[:SOURce<hw>]:BB:OFDM:TRIGger[:EXTernal]:INHibit <TrigExtInhibit>

Specifies the number of samples by which a restart is to be inhibited following an exter-nal trigger event.

Trigger Commands


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Parameters:<TrigExtInhibit> integer

Range: 0 to dynamic*RST: 0


Manual operation: See "External / Trigger Inhibit" on page 51

5.9 Marker Commands

Example: Configure and enable standard marker signalsSOURce:BB:OFDM:TRIGger:OUTPut2:MODE?// RESTartSOURce:BB:OFDM:TRIGger:OUTPut2:FOFFset 10SOURce:BB:OFDM:TRIGger:OUTPut2:ROFFset 20

[:SOURce<hw>]:BB:OFDM:TRIGger:OUTPut<ch>:MODE................................................... 83[:SOURce<hw>]:BB:OFDM:TRIGger:OUTPut<ch>:ROFFset................................................ 83[:SOURce<hw>]:BB:OFDM:TRIGger:OUTPut<ch>:FOFFset................................................ 83[:SOURce<hw>]:BB:OFDM:TRIGger:OUTPut<ch>:DELay................................................... 84

[:SOURce<hw>]:BB:OFDM:TRIGger:OUTPut<ch>:MODE <MarkMode>

Defines the signal for the selected marker output.

Parameters:<MarkMode> RESTart

*RST: RESTart

Example: See Example "Configure and enable standard marker signals"on page 83.

Manual operation: See "Marker Mode" on page 53

[:SOURce<hw>]:BB:OFDM:TRIGger:OUTPut<ch>:ROFFset <MarkRiseOffs>[:SOURce<hw>]:BB:OFDM:TRIGger:OUTPut<ch>:FOFFset <MarkFallOffs>

Shifts the rising or falling ramp of the marker by the selected number of samples.

Parameters:<MarkFallOffs> integer

Range: -640000 to 640000*RST: 0


Manual operation: See " Rise/Fall Offset " on page 54

Marker Commands


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[:SOURce<hw>]:BB:OFDM:TRIGger:OUTPut<ch>:DELay <MarkDelay>

Defines the delay between the signal on the marker outputs and the start of the sig-nals.

Parameters:<MarkDelay> float

Range: 0 to 16777215Increment: 1*RST: 0Default unit: Samples


Manual operation: See "Marker x Delay" on page 54

5.10 Clock Commands

Example: Clock settingsSOURce:BB:OFDM:CLOCk:SOURce INT

[:SOURce<hw>]:BB:OFDM:CLOCk:SOURce......................................................................84

[:SOURce<hw>]:BB:OFDM:CLOCk:SOURce <ClockSour>

Selects the clock source:● INTernal: Internal clock reference

Parameters:<ClockSour> INTernal

*RST: INTernal

Example: See Example "Clock settings" on page 84.

Manual operation: See "Clock Source" on page 55

Clock Commands

XML Settings FileR&S®SMBVB-K114

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AnnexA XML Settings File

You can use the created *.xml file for OFDM signal analysis.

Use the file for measurements with Rohde & Schwarz signal analyzer, for exampleR&S®VSE-K96. The example below shows the structure of the default fileExported_K114_settings_K96.xml.

Example: Default "Exported_K114_settings_K96.xml" file<?xml version="1.0" encoding="utf-8"?><FSK96ConfigurationFile> <GeneralParameters> <Name>OFDM_16MHzBW_312kHzSpacing</Name> <FFTSize>64</FFTSize> <NofSymbols>10</NofSymbols> <CyclicDelayDiversity>0</CyclicDelayDiversity> <CyclicPrefixLength>16</CyclicPrefixLength> <StartCarrierIndex>0</StartCarrierIndex> <Description>Automatically exported R&S SMBV100B-K114 settings to K96 system configuration file.</Description> </GeneralParameters>

<Preamble> <BlockLength>0</BlockLength> <FrameOffset>0</FrameOffset> </Preamble> <Constellations> <Constellation> <ID>0</ID> <Name>Zero</Name> <HumanReadableName>Zero</HumanReadableName> <ScalingFactor>1.0</ScalingFactor> <AllocationType>Zero</AllocationType>

<IQSymbols> <IQ> <Re>0.000000</Re> <Im>0.000000</Im> </IQ> </IQSymbols> </Constellation> </Constellations> <Allocation> <Matrix>AQEBAQECAgI==</Matrix> </Allocation> <PilotInformation>

XML Settings FileR&S®SMBVB-K114

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<PilotSymbolIdxArray>AQADAAMAAAAA==</PilotSymbolIdxArray> </PilotInformation></FSK96ConfigurationFile>

Glossary: List of the Terms and AbbreviationsR&S®SMBVB-K114

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Glossary: List of the Terms and Abbrevia-tions

AARB: Arbitrary Waveform Generator

CCoMP: Coordinated multipoint

Ff-OFDM: Filtered OFDMSynonyms: SF-OFDM, UF-OFDM, RB-F-OFDM

FBMC: Filter-Bank Multi-carrier

FFT: Fast Fourier Transformation

GGFDM: Generalized Frequency Division Multiplexing

IIFFT: Inverse Fast Fourier Transformation

NNOMA: Non-Orthogonal Multiple Access

OOFDM: Orthogonal Frequency-Division Multiplexing

OQAM: Offset QAM

QQAM: Quadrature amplitude modulation

RRB-F-OFDM: Resource block based filtered OFDMsee f-OFDM

Resource block (UFMC): Subband (UFMC)

SSCMA: Sparse code multiple access

Glossary: List of the Terms and AbbreviationsR&S®SMBVB-K114

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SF-OFDM: Spectrum Filtered-OFDMsee f-OFDM

SMT FBMC: Staggered modulated multitone filter bank

Subband (UFMC): In the context of the UFMC modulation, the term subbanddescribes the smallest amount of resources that can be allocated to a user.Synonyms: Resource block, Subcarrier

Subcarrier (UFMC): Subband (UFMC)

UUF-OFDM: Universal Filtered-OFDMsee f-OFDM

UFMC: Universal Filtered Multi-Carrier

Universal Filtered OFDM (UF-OFDM): UFMC

Glossary: Specifications, References, Documents with Further InformationR&S®SMBVB-K114

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Glossary: Specifications, References, Docu-ments with Further Information

Symbols[1]: Michailow, N.; Gaspar, I.; Krone, S.; Lentmaier, M.; Fettweis, G."Generalized Frequency Division Multiplexing: Analysis of an Alternative Multi-CarrierTechnique for Next Generation Cellular Systems", Aug. 2012

[2]: Schaich, F.; Wild, T.; Chen, Y.“Waveform contenders for 5G - suitability for short packet and low latency transmis-sions,” VTC Spring, May 2014.

[3]: Viholainen, A.; Bellanger, M.; Huchard, M."PHYDYAS – PHYsical layer for DYnamic AccesS and cognitive radio", Report D5.1,Jan. 2009

5GNOW: Project 5th Generation Non-orthogonal Waveforms for Asynchronous Signal-inghttp://www.5gnow.eu

5GNOW D3.x: 5G Waveform Candidate Selection, Version D3.2Final 5GNOW Transceiver and frame structure concept, Version D3.3

http://www.5gnow.eu

List of CommandsR&S®SMBVB-K114

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List of Commands[:SOURce<hw>]:BB:OFDM:ACPLength.......................................................................................................... 62[:SOURce<hw>]:BB:OFDM:ACPSymbols....................................................................................................... 62[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:CIQFile........................................................................................... 75[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:CONFlict?.......................................................................................76[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:CONTent.........................................................................................75[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:DATA.............................................................................................. 74[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:LIST................................................................................................74[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:MODulation.................................................................................... 72[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:PATTern..........................................................................................74[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:PHYSbits?......................................................................................74[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:PWR...............................................................................................75[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:CODebook?........................................................................ 77[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:LAYer<st0>:PWR?.............................................................. 77[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:LAYer<st0>:STATe.............................................................. 77[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:LAYer<st0>:USER...............................................................78[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:NLAYers?............................................................................ 76[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCMA:SPRead?.............................................................................76[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCNO.............................................................................................73[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SCOFfset........................................................................................73[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:STATe............................................................................................. 75[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SYNO............................................................................................. 73[:SOURce<hw>]:BB:OFDM:ALLoc<ch0>:SYOFfset........................................................................................73[:SOURce<hw>]:BB:OFDM:BWOCcupied?.....................................................................................................63[:SOURce<hw>]:BB:OFDM:CLOCk:SOURce..................................................................................................84[:SOURce<hw>]:BB:OFDM:CPLength.............................................................................................................61[:SOURce<hw>]:BB:OFDM:CPSYmbols......................................................................................................... 62[:SOURce<hw>]:BB:OFDM:FILTer:CUTTrans................................................................................................. 65[:SOURce<hw>]:BB:OFDM:FILTer:LENGth.....................................................................................................65[:SOURce<hw>]:BB:OFDM:FILTer:ROLLoff.................................................................................................... 65[:SOURce<hw>]:BB:OFDM:FILTer:SBATtenuation..........................................................................................65[:SOURce<hw>]:BB:OFDM:FILTer:TYPE........................................................................................................ 64[:SOURce<hw>]:BB:OFDM:FILTer:UCATalog?................................................................................................66[:SOURce<hw>]:BB:OFDM:FILTer:ULENgth?.................................................................................................66[:SOURce<hw>]:BB:OFDM:FILTer:USELection...............................................................................................66[:SOURce<hw>]:BB:OFDM:FILTer:WINDowing...............................................................................................66[:SOURce<hw>]:BB:OFDM:FOFDm:NSUBand...............................................................................................67[:SOURce<hw>]:BB:OFDM:GFDM:DBSYmbols..............................................................................................67[:SOURce<hw>]:BB:OFDM:LGUard?..............................................................................................................63[:SOURce<hw>]:BB:OFDM:MODPreset..........................................................................................................59[:SOURce<hw>]:BB:OFDM:MODulation..........................................................................................................59[:SOURce<hw>]:BB:OFDM:NALLoc................................................................................................................72[:SOURce<hw>]:BB:OFDM:NOCCupied......................................................................................................... 61[:SOURce<hw>]:BB:OFDM:NSUBcarriers.......................................................................................................60[:SOURce<hw>]:BB:OFDM:OUTPath..............................................................................................................59[:SOURce<hw>]:BB:OFDM:PRESet................................................................................................................58[:SOURce<hw>]:BB:OFDM:RGUard?............................................................................................................. 63[:SOURce<hw>]:BB:OFDM:SAMPling?...........................................................................................................62

List of CommandsR&S®SMBVB-K114

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[:SOURce<hw>]:BB:OFDM:SCSPace.............................................................................................................61[:SOURce<hw>]:BB:OFDM:SEQLength..........................................................................................................61[:SOURce<hw>]:BB:OFDM:SETTing:CATalog................................................................................................ 58[:SOURce<hw>]:BB:OFDM:SETTing:DEL.......................................................................................................59[:SOURce<hw>]:BB:OFDM:SETTing:LOAD....................................................................................................58[:SOURce<hw>]:BB:OFDM:SETTing:STORe..................................................................................................58[:SOURce<hw>]:BB:OFDM:SRATe:VARiation.................................................................................................60[:SOURce<hw>]:BB:OFDM:STATe.................................................................................................................. 57[:SOURce<hw>]:BB:OFDM:SUBCarriers?...................................................................................................... 67[:SOURce<hw>]:BB:OFDM:TRIGger:ARM:EXECute......................................................................................81[:SOURce<hw>]:BB:OFDM:TRIGger:DELay:UNIT..........................................................................................81[:SOURce<hw>]:BB:OFDM:TRIGger:EXECute...............................................................................................81[:SOURce<hw>]:BB:OFDM:TRIGger:EXTernal:RDELay?...............................................................................82[:SOURce<hw>]:BB:OFDM:TRIGger:EXTernal:SYNChronize:OUTPut.......................................................... 81[:SOURce<hw>]:BB:OFDM:TRIGger:EXTernal:TDELay................................................................................. 82[:SOURce<hw>]:BB:OFDM:TRIGger:OUTPut<ch>:DELay.............................................................................84[:SOURce<hw>]:BB:OFDM:TRIGger:OUTPut<ch>:FOFFset..........................................................................83[:SOURce<hw>]:BB:OFDM:TRIGger:OUTPut<ch>:MODE.............................................................................83[:SOURce<hw>]:BB:OFDM:TRIGger:OUTPut<ch>:ROFFset......................................................................... 83[:SOURce<hw>]:BB:OFDM:TRIGger:RMODe?...............................................................................................80[:SOURce<hw>]:BB:OFDM:TRIGger:SLENgth............................................................................................... 80[:SOURce<hw>]:BB:OFDM:TRIGger:SLUNit.................................................................................................. 80[:SOURce<hw>]:BB:OFDM:TRIGger:SOURce................................................................................................79[:SOURce<hw>]:BB:OFDM:TRIGger[:EXTernal]:DELay................................................................................. 81[:SOURce<hw>]:BB:OFDM:TRIGger[:EXTernal]:INHibit................................................................................. 82[:SOURce<hw>]:BB:OFDM:UFMC:NSUBand................................................................................................. 67[:SOURce<hw>]:BB:OFDM:UFMC:PREequal.................................................................................................68[:SOURce<hw>]:BB:OFDM:USER<ch0>:DATA.............................................................................................. 68[:SOURce<hw>]:BB:OFDM:USER<ch0>:LIST................................................................................................68[:SOURce<hw>]:BB:OFDM:USER<ch0>:PATTern.......................................................................................... 69[:SOURce<hw>]:BB:OFDM:USER<ch0>:PWR............................................................................................... 69[:SOURce<hw>]:BB:OFDM:USER<ch0>:STATe............................................................................................. 69[:SOURce<hw>]:BB:OFDM:WAVeform:CREate.............................................................................................. 59[:SOURce<hw>]:BB:OFDM[:TRIGger]:SEQuence.......................................................................................... 79

IndexR&S®SMBVB-K114

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Index

Symbols

*.dat fileFilter ............................................................................ 17I/Q data ....................................................................... 21

*.iqw file ............................................................................. 21

A

AllocationBoost ...........................................................................42Conflict ........................................................................ 44Content type ............................................................... 42Data source ................................................................ 41Modulation .................................................................. 41Number ....................................................................... 40Physical bits ................................................................ 41Power offset ................................................................ 42State ........................................................................... 43Subcarrier number ...................................................... 41Subcarrier offset ..........................................................41Symbol number ...........................................................41Symbol offset .............................................................. 41

Allocation number ............................................................. 40Application cards ................................................................. 7Application notes ................................................................. 7Arm ....................................................................................50Armed_Auto ...................................................................... 49Armed_Retrigger ............................................................... 49Attenuation

Side-lobe attenuation .................................................. 34Stopband .................................................................... 34

Auto ................................................................................... 49

B

BandwidthOccupied .....................................................................31

Brochures ............................................................................ 6

C

CatalogUser filter .................................................................... 35

ClockSource ........................................................................ 55

Codebook .......................................................................... 45Codebook size M .............................................................. 45Common trigger settings ................................................... 49Conventions

SCPI commands ......................................................... 56Coupled trigger settings .................................................... 49Custom I/Q data

File format ................................................................... 21Cyclic prefix, CP

As in LTE .....................................................................30Calculation principle ....................................................29Dynamic ...................................................................... 30Enable .........................................................................29Enable CP pattern ................................................ 30, 31Length ......................................................................... 29

D

Data block size .................................................................. 36Data sheets ......................................................................... 6Default settings

OFDM Signal Generation ........................................... 25Delay

Marker .........................................................................54Trigger .........................................................................52

DeleteUser filter .................................................................... 35

Documentation overview ..................................................... 5Dolph-Chebishev window

Length ......................................................................... 34Shaping .......................................................................34Side-lobe attenuation .................................................. 34

E

Export OFDM settings for R&S VSE-K96 ......................... 26External trigger .................................................................. 51External trigger delay ....................................................... 52

F

f-OFDMFilter parameters .........................................................34

Factor K .............................................................................37FBMC types

CMT, FMT, SMT .......................................................... 12FFT size ............................................................................ 28Filter

Cut transient response ................................................35Dolph-Chebishev ........................................................ 33f-OFDM ....................................................................... 34GFDM ......................................................................... 33Length ......................................................................... 34Side-lobe attenuation .................................................. 34UFMC ......................................................................... 33Windowing method, f-OFDM ...................................... 34

Filter lengthFBMC ..........................................................................37

Filter Pre-equalizationActivate ....................................................................... 36

First symbolTime plan .................................................................... 47

G

GenerateWaveform file .............................................................. 25

Getting started .....................................................................5

H

Help ..................................................................................... 6

I

I/Q files*.dat file ....................................................................... 21*.iqw file ...................................................................... 21

Installation ........................................................................... 8Instrument help ................................................................... 6


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Instrument security procedures ........................................... 6

L

LayerPower offset ................................................................ 46State ........................................................................... 46

Layer mappingSettings ....................................................................... 46User ............................................................................ 46

Left guardNumber of subcarriers ................................................ 32

LoadUser filter .................................................................... 35

M

MarkerOffset, fall .................................................................... 54Offset, rise ...................................................................54

Marker Delay ..................................................................... 54Modulation type ................................................................. 26

N

NumberLeft guard subcarriers ................................................. 32Right guard subcarriers .............................................. 32

Number of layers J ............................................................ 45

O

OFDMSettings file automatically created .............................. 26

Open source acknowledgment (OSA) .................................7OQAM

Principle ...................................................................... 12

P

PilotSignal analyzer ........................................................... 42

PN9Preamble .................................................................... 42

Preamble symbolsNumber ....................................................................... 42

R

Raised cosine filtersee Cosine filter .......................................................... 33

Release notes ..................................................................... 7Resource blocks

Number ....................................................................... 36Retrigger ........................................................................... 49Right guard

Number of subcarriers ................................................ 32Roll-off

see rolloff .................................................................... 34Rolloff factor

GFDM ......................................................................... 34Root raised cosine filter

see Root Cosine ......................................................... 33RRC filter

see Root Cosine filter ................................................. 33

S

Safety instructions ............................................................... 6Sampling rate .................................................................... 31Save/Recall

OFDM Signal Generation ........................................... 25Script

Generate user filter ..................................................... 17Sequence length ............................................................... 29Service manual ................................................................... 6Set to default

5G candidates .............................................................25Settings file

Analysis with R&S VSE-K96 ....................................... 26Signal duration unit ........................................................... 49Signal generation status ....................................................50Single ................................................................................ 49Soft truncation

Length ......................................................................... 34Windowing method ..................................................... 34

Soft truncation windowShaping .......................................................................34

Spreading factor K ............................................................ 45Standard settings

OFDM Signal Generation ........................................... 25State

OFDM Signal Generation ........................................... 25Sub-bands

Number ....................................................................... 36Subband

Filter Pre-equalization ................................................. 36Subcarriers

Bandwidth ................................................................... 29Number of active .........................................................28Number of available .................................................... 28Occupied .....................................................................28Spacing ....................................................................... 29

SubchannelNumber ....................................................................... 36

Superimposed symbolsFaktor K ...................................................................... 37

SymbolsTime plan .................................................................... 47

SynchronizationSignal analyzer ........................................................... 42

T

Time planOpen in a new window ................................................47

TriggerSync. output ................................................................ 50

Trigger delay ..................................................................... 52Actual .......................................................................... 52Expressed in time ....................................................... 52Resulting ..................................................................... 52Unit ............................................................................. 52

Trigger mode ..................................................................... 49Trigger signal duration .......................................................50Trigger source ................................................................... 50

U

UFMCFilter parameters .........................................................34


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UserBoost ...........................................................................39Data source ................................................................ 38How many ................................................................... 38Power offset ................................................................ 39State ........................................................................... 39

User filterCreate file ................................................................... 17File format ................................................................... 17Script ...........................................................................17

User manual ........................................................................ 6User to layer mapping ....................................................... 46

W

Waveform fileCreate ......................................................................... 25

White papers ....................................................................... 7Windowing method

Hamming .................................................................... 34Hanning ...................................................................... 34