vector communication lab vcl04

7/23/2019 Vector Communication Lab VCL04

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Features: 40KHz to 4000MHz Vector Signal Generation and Analysis Use with Linux, LabVIEW, MATLAB Simulink No recurring cost of software or licences Low power for FCC compliant licence free safe operation ASIC Architecture: combines LNA, PA driver, RX/TX Mixers,

RX/TX Filters, Synthesizers, RX Gain control, TX power control +5dBm Transmit power & -120dBm Sensitivity Receiver FPGA programmable transmission and reception for low latency Vector IQ Modulation Bandwidth Programmable upto 30 MHz

Supports both TDD &FDD Full Duplex upto 30MHz Calibrated +0.1ppm TCXO frequency reference Up to 400 MS/s USB 3.0 Data Streaming USB 3.0 Super speed Interface to Core i5 Mobile Workstation

Description:The Amitec VCL 04 Vector Signal Communication Lab is a fullysynthesized vector signal Generator with vector Signal Analysercombined into a single transceiver controlled with a high speedcomputer for exceptional value & performance.

With the advent of digital communications systems, it is no longerpossible to adequately test these systems with traditional analogsignal generators. Amitec Vector signal generator is capable ofgenerating digitally-modulated radio signals that may use any of a

large number of digital modulation formats such as QAM, QPSK,FSK, BPSK, and OFDM. Modern commercial digital communicationsystems are all based on well-defined industry standards, so, it cangenerate signals based on these standards like GSM, W-CDMA(UMTS), CDMA2000, LTE, Wi-Fi (IEEE 802.11), and WiMAX (IEEE802.16) etc. It uses a high speed DAC controlled by a PC, followedby a vector modulator and a RF signal generator.

On the other hand a vector signal analyzer measures the magnitudeand phase of the input signal at a single frequency within the IFbandwidth of the instrument. It is used to make in-channelmeasurements, such as error vector magnitude, code domain power,and spectral flatness, on known signals.

It is useful for measuring and demodulating digitally modulated

signals like W-CDMA, LTE, and WLAN. It is used to determine thequality of modulation and can be used for design validation andcompliance testing.

Vector signal analyzer operates by first down converting the signalspectra by using superheterodyne techniques. A portion of the inputsignal spectrum is down-converted using a PLL synthesized voltage-controlled oscillator and a mixer to the Zero IF of a low-pass filter toband-limit the signal and prevent aliasing. The signal is thendigitized using an analog-to-digital converter. Sampling rate is variedin relation to the frequency span under consideration.

Once the signal is digitized, it is separated into quadrature and in-phase components using a quadrature detector, which is typicallyimplemented with a discrete Hilbert transform. Severalmeasurements are made and displayed using these signalcomponents and various DSP processes.

A FFT is used to compute the frequency spectrum of the signal.There is a windowing function option to limit spectral leakage andenhance frequency resolution.This window is implemented bymultiplying it with the digitized values of the sample period beforecomputing the FFT.

A constellation diagram represents a signal modulated by a digitalmodulation scheme such as quadrature amplitude modulation orphase-shift keying. This diagram maps the magnitude of thequadrature and in-phase components to the vertical and horizontaldirections, respectively. Qualitative assessments of signal integritycan be made based on interpretation of this diagram.

By representing the quadrature and in-phase components as thevertical and horizontal axes, the error vector magnitude can becomputed as the distance between the ideal and measuredconstellation points on the diagram. This requires knowledge of themodulated signal in order to compare the received signal with theideal signal.

The system is based on a reconfigurable RF/FPGA/ARM hardwareplatform and an open source communications technology software.This approach allows for tremendous flexibility at a reduced cost.Each of the communications technology to be studied is provided as

an application that can be selected from the menu. The hardware isself configurable upon connecting to mobile workstation provided.

The selected application configures the hardware platform toimplement the communications technology physical layer andpresents a specially-designed user interface for the student.

In analog system, it can implement on air transmission & receptionof Analog modulation & demodulation techniques like AM, DSBSC,SSB, Narrowband FM, Wideband FM, Stereo FM and others.

In digital system, it can implement on air transmission & reception ofDigital Modulation & Demodulation techniques like ASK, FSK,BPSK, DBPSK, MSK, GMSK, DQPSK, QPSK, OQPSK, pi/4QPSK,8PSK,16QAM, 64QAM, 256QAM, CPFSK, GFSK, and other

variants.

The USB 3.0 super speed interface serves as the connectionbetween the VCL04 Lab and the mobile workstation. This enablesthe user to realize 40 MS/s of real-time bandwidth in the receive andtransmit directions, simultaneously.

ASIChouses complete RF and DAQ subsystems on a single board.It hosts onboard RF Transceiver subsystems capable of tuningfrequencies from 40KHz to 4GHz.

For ease of usage Core i5, USB 3.0 Mobile Workstation is providedwith Linux Ubuntu pre loaded and tested with platform for repeatableperformance and no surprises. The list of experiments is growing bythe day to include most modulations as per international curriculum.

VECTOR SIGNAL GENERATOR & ANALYSER

VECTOR COMMUNICATION LAB VCL04

Mfd by: Amitec Electronics Ltd.Regd. Off: 504, Nilgiri, 9 Barakhamba Road, New Delhi-110001, India,Works: 4/32, Site-4, Industrial Estate Sahibabad, NCR-201010, India,[email protected], www.amitec.co+91-11-41505510, +91-120-4371276


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Hardware Technical SpecificationsMicrowave Vector Signal GeneratorRF Frequency Range 40KHz-4000MHzResolution 2000 Kbits18bit X18bit Multipliers & PLL >100 &4Maximum User I/Os & Channels >500 & >200 DifferentialCurrent Consumption 3GHzOnboard Graphics Intel HD 4600MRAM 4GB DDR3 1.6GHzR/W Speed >100MBpsPorts 3XUSB 3.0, HDMI, Gigabit LAN

Software Environment :Features: Audio, Boolean, Byte Operators, Channelizers, ChannelModels, Coding, Control Port, Debug Tools, Deprecated, Equalizers,Error Coding, FCD, File Operators, Filters, Fourier Analysis, GUIWidgets, Impairment Models, Instrumentation, Level Controllers, MathOperators, Measurement Tools, Message Tools, Misc, Modulators,Networking Tools, NOAA, OFDM, Packet Operators, Pager, PeakDetectors, Resamplers, Sinks, Sources, Stream Operators, StreamTag Tools, Symbol Coding, Synchronizers, Trellis Coding, TypeConverters, Variables, Waveform Generators.

Experiments nominal:On air transmission and reception of analog modulation &demodulation of FM, AM, DSB & SSB and digital modulation &

demodulation of PAM, PWM,PPM, PCM, DPCM, DM, ASK, FSK,PSK, DPSK, MSK, GMSK, CPFSK, GFSK, BPSK, QPSK, DQPSK,OQPSK, pi/4QPSK, 8PSK,16QAM, 64QAM, 256QAM, ADSL, OFDM,DSSS, FHSS, Analog Signal Sampling & Reconstruction, DigitalTime Division Multiplexing and Demultiplexing, Data Conditioning &Carrier Modulation, Data Reconditioning & Carrier Demodulation,

Analog Channel Models like Noise, Interference, Distortion, Channelperformance measurements (spectral bandwidth, Symbol Rate, BitRate, Channel Capacity, Channel Utilization, Signal to noise ratio, BitError Rate (BER), Latency, Jitter, Eye Diagram, Constellationdiagram, Oscilloscope, Spectrum Analyser, Waterfall display, Etc

Accessories:20dB attenuator X 2pcs, RG316 SMA-SMA CablesX2pcs, Microstrip Log Periodic Array S11>10dB, Bandwidth 3 +/-1GHz, Gain 6dBi X2 pcs, 50 Ohms Matched Termination X 2pcs,

Antenna Mounting Stand, Omni Directional Antenna 1-4GHz X2pcs,Amplifier 20dB gain & 3dB NF & +20dBm compresssion



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4ASK Constellation captured in realtime on air at Rx @ 1GHz

BPSK Constellation captured in realtime on air at Rx @ 1GHz

16QAM Constellation captured in realtime on air at Rx @ 1GHz

QPSK Constellation captured in realtime on air at Rx @ 1GHz Amplitude Modulation (AM) Frequency Domain @ 1GHz

AM Time & Frequency Domain Combined Waterfall

256 QAM Constellation capture in realtime on air at Rx @ 1GHz

8 PSK Constellation captured in realtime on air at Rx @ 1GHz

64 QAM Constellation captured in realtime on air at Rx @ 1GHz




Narrow Band FM Frequency Domain Realtime Rx @ 1GHz


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QPSK I & Q in Time Domain response @ >1GHz

GMSK Frequency Domain response @ >1GHz

QAM 256 Frequency Domain response @ >1GHz

Orthogonal Frequency Division Multiplexing OFDM FD @ >1G

ASK Time Domain Response @ >1GHz



FSK Implementation in Graphical User Interface

Finite Impulse Response (FIR) Low Pass Filter


Orthogonal Frequency Division Multiplexing OFDM TD @ >1G

Code Division Multiple Access CDMA Downlink Capture

Finite Impulse Response (FIR) Root Raised Cosine (RRC)

Disclaimer: Images shown are Indicative only. Color or Model may differ from the picture shown (Features will remain same or More). Specifications are subject to change without notice due to continuous improvement

of product.

vector communication lab vcl04

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