call for proposals/media/corporate/pdf/hirp/2016--microwa… · call for proposals microwave hirp...

HIRP OPEN 2016 Microwave

1

Call for Proposals

Microwave

HIRP OPEN 2016


2

Copyright © Huawei Technologies Co., Ltd. 2015-016. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective holders.

Confidentiality

All information in this document (including, but not limited to interface protocols, parameters, flowchart and formula) is the confidential information of Huawei Technologies Co., Ltd and its affiliates. Any and all recipient shall keep this document in confidence with the same degree of care as used for its own confidential information and shall not publish or disclose wholly or in part to any other party without Huawei Technologies Co., Ltd’s prior written consent.

Notice

Unless otherwise agreed by Huawei Technologies Co., Ltd, all the information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute the warranty of any kind, express or implied.

Distribution

Without the written consent of Huawei Technologies Co., Ltd, this document cannot be distributed except for the purpose of Huawei Innovation R&D Projects and within those who have participated in Huawei Innovation R&D Projects.

Application Deadline: 09:00 A.M., 18th July, 2016 (Beijing Standard Time, GMT+8).

If you have any questions or suggestions about HIRP OPEN 2016, please send Email

([email protected]). We will reply as soon as possible.

mailto:[email protected]).


3

Catalog

HIRPO20161101: New RF Material Application in Microwave Communication ....................... 4

HIRPO20161102: Phase Pop Detection and Estimation .......................................................... 8

HIRPO20161103: Relative Delay Estimation Between LOS-MIMO Channels ....................... 10

HIRPO20161104: Hub-site Interference Cancellation ............................................................ 13


4

HIRPO20161101: New RF Material Application in

Microwave Communication

1 Theme: Microwave

2 Subject: microwave technology research

List of Abbreviations

LC: Liquid Crystal

MTM: Metamaterial

PC: Photonics Crystal

EBG: Electromagnetic Band Gap

PBG: Photonic Band Gap

3 Background

Microwave communication spectrum is transferring to millimeter-wave/THz for

getting more bandwidth. For such high frequency, several issues are raised for

the RF front-end design:

1) Relatively high insertion loss: the insertion loss of waveguide and insertion

loss has little impact on system performance. However, for mm-wave/THz

system, the insertion loss will become a main concern;

2) Wideband: due to more bandwidth is allocated on mm-wave/THz, the

relative bandwidth is around 20% which is a great challenge for antenna and

some specific waveguide structure; even for traditional band, the wideband

capability are also very beneficial for reducing the types of components. For

example, an antenna can cover multi-band, e.g., 13-23GHz, can provide very


5

promising flexibility with single antenna equipment.

3) Phase and amplitude error: sight manufacture error will bring large

phase/amplitude change due to the very short wavelength. This will impact

phased array and MIMO system design.

4) Tunable components: phased array antenna is a hot topic since

beamforming capability will be an important feature for millimeter-wave/THz

system deployment due to the very narrow beam. For achieving this system,

the phase shifting components is necessary for tuning the phase of each

antenna elements.

Metamaterial

Researchers are working on Metamaterial which is a kind of artificial periodic

structure which could achieve EM propagation with opposite phase

propagation direction and desired phase/amplitude distribution. By using this

effect, it is possible to mitigate the frequency selective issue for traditional

material, and achieve structure/antenna miniature. By this way, the above

issues (wideband, insertion loss, error control) could be handled.

PC/PBG/EBG material

Similar as Metamaterial, the photonic crystal material is also a kind of artificial

periodic structure. The difference is that photonic crystal material creates

electromagnetic band gap effects which block/reflect almost all signals on

certain frequency range. The effect can be used to design waveguide structure

and antenna substrate with very low insertion loss.

Liquid Crystal

For implementing a phased array antenna, it is typically required to integrate

phase shifting components in antenna. However, the cost is too high by

integrating a lot of MMIC phase shifter into antenna, but the performance is still


6

bad. Now researchers are looking for some types of suitable tunable elements

operating at millimeter-wave/THz. Liquid crystal is one of the materials could

be achieve very low cost and easy fabrication. The Permittivity ε of liquid

crystal material can be voltage-controlled by the effect of the molecular

arrangement change with different voltage. The phase shifting can be

achieved with this effect.

4 Scope

Problem to be resolved: a detailed consultant report with some simulation

results for understanding the feasibility to apply the new RF material in

microwave system.

Statement of Work 1 –metamaterial and photonic crystal application in

mm-wave/THz

WI1 Metamaterial/PC design methodology and the requirement for

fabrication

WI2 Technology status, including industry status and research

status

WI3 Theoretical design, simulation and feasibility analysis, include

but not limited, waveguide, transmission line, power distribution

network, leaky-wave antenna, antenna substrate, antenna unit,

wideband antenna feeder (e.g., 13~23GHz),….,etc.

WI4 Technical challenges and future trends;

Statement of Work 2 – Liquid crystal application in mm-wave/THz

WI1 Technology status, including industry status and research

status

WI2 Liquid crystal tunable components design and simulation,

include but not limited, phase shifter, tunable filter,…. etc.

WI2 Liquid crystal reconfigurable reflectarray design and simulation

WI3 Technical challenges and future trends;

5 Expected Outcome and Deliverables

D1 Consultant report on metamaterial and photonic crystal


7

application in mm-wave/THz

D2 Consultant report on Liquid crystal application in mm-wave/THz

D3 Simulation example projects;

6 Phased Project Plan

Phase1 (~3 months): Survey the state of the metamaterial and photonic crystal

application in mm-wave/THz and provide the related technical report;

Phase2 (~5 months): Research on Liquid crystal application in mm-wave/THz

and provide the related technical report;

Phase3 (~4 months): Simulation and modification.

Click here to back to the Top Page


8

HIRPO20161102: Phase Pop Detection and Estimation

1 Theme: Microwave

2 Subject: digital signal detection and estimation

3 Background

In order to achieve higher capacity, microwave backhaul transmission goes to

higher frequency, higher order modulation, and multiple channels.

Unfortunately, when we go to higher frequency, phase pop will be more serious.

Phase pop will introduce burst errors for the link, especially for higher order

modulation which is quite sensitive to phase pop. In the end, it makes the

higher order modulation with much low availability.

4 Scope

Problem to be resolved:

s1

s2

a

a

1jw te

2jw te

3jw te

4jw te

1 3 2 3

1 1 2

j w w t j w w tr t s t e as t e

1 4 2 4

2 1 2

j w w t j w w tr t as t e s t e

1n t

2n t

As illustrated above, if there is no phase pop we assume 1 2 3 4w w w w . We

can recover the transmitted signal 2

1 1 2 1s t r t ar t a . But if there is

a phase pop happening in oscillator 1, 2, 3 or 4, we can’t recovery the exact


9

transmitted symbol. The best way to figure out this problem is finding a method

to detect and estimate the phase pop happening in oscillator 1, 2, 3 or 4, and

compensate it.


Mathematic derivation for phase pop detection and estimation algorithm is

needed. Simulation report (matlab or simulink) is supposed to deliver to

Huawei.


Phase1 (~6 months): Design the phase pop detection and estimation algorithm.

Technical document for phase pop detection and estimation algorithm;

Phase2 (~6 months): Simulation report for the proposed algorithm. Complexity

analysis and implementation optimization.



10

HIRPO20161103: Relative Delay Estimation Between

LOS-MIMO Channels

1 Theme: Microwave

2 Subject: microwave communication


Los: Line of Sight

MIMO: Multiple Input and Multiple Output

3 Background

Trend，challenge ，value and objectives

The specific explanation of each parameter:


11

The specific explanation of each parameter:

1. t1, t2, t3, t4 is the time delay between transmitted signals, where t1, t2,

t3, t4 is independent, among t1, t2, t3, t4 the biggest difference is 100ns,

for example (t1 = 1ns, t2 = 50ns, t3 = 80ns, t4 = 101ns);

2. e^j*(w1*t), e^j*(w2*t), e^j*(w3*t), e^j*(w4*t) are signal carriers, 4 carrier

frequencies are independent to each other;

3. e^j*ph1(t), e^j*ph2(t), e^j*ph3(t), e^j*ph4(t) are phase noise, 4 channels

are independent to each other, the phase noise model is Wiener chirp, The

quota is -70dBc/10Kz,-90dBC/100Khz;

4. 4 channels multipath is independent, the model is rummler 2 ray model,

the notch depth is about -20db;

5. g1, g2, g3, g4 is gain, g1, g2, g3, g4 is independent, g1 and g2 biggest

difference 8db, g3 and g4 biggest difference 8db; g1/g2 and g3/g4 biggest

difference 18db; for example (g1 = 1, g2 = 1/6, g3 = 1/60, g4 = 1/10);

6. e^j*[w2*t + ph2(t)] is receiver carrier, it is different from w1, and the

difference is less than 500Khz, ph2(t) is phase noise, the phase noise

model is Wiener chirp, The quota is -70dBc/10Kz,-90dBC/100Khz;

7. awgn is the channel white noise, snr = 40Db.

4 Scope

Problem to be resolved: In having signals disturbance, frequency offset and

multi-path, phase noise in situation, can estimate the time delay information

accurately.


12


We need an algorithm design to estimate delay information accurately,

including reports, simulation results and source code.


Phase1 (~6 months): Theory and feasibility research for the algorithm.

Technical analysis document for time delay estimation algorithm.

Phase2 (~6 months): The performance optimization of the algorithm.

Performance report for time delay estimation algorithm.



13

HIRPO20161104: Hub-site Interference Cancellation

1 Theme: Microwave

2 Subject: microwave communication


UL: Uplink

DL: Downlink

MIMO: Multiple input and multiple output

3 Background

Trend，challenge ，value and objectives

figure 1. Hub-site transmission


14

The microwave hub-site transmission is shown in figure 1. There are two

microwave links 1 and 2 sharing the same frequency 1 for uplink and

frequency 2 for downlink. If the angle between link 1 and 2 is too small, the link

1 and 2 should interfere each other. In current deployment, the angle should

greater than 60 degree for x-polarization and 90 degree for co-polarization to

achieve enough isolation between link 1 and 2. The link interference brought

strong constraints to network programming.

Trend: The market and network department want to reduce the angle

constraints by new practical algorithm design.

Challenge: link interference cancellation. For example, pre-coding, multi-user

detection, et. al.

Value and objective: decrease the angle to less than 30degree for

co-polarization, and the minimum to 10 degree for co-polarization. The small

angle constraints brought more flexibility to network programming.

4 Scope

Decrease the angle to less than 30degree for co-polarization, and the

minimum to 10 degree for co-polarization with tolerable performance loss (for

example, 1dB) of link 1/2. The link 1 and 2 may have different bandwidths,

transmission power, communication distance, and modulation.


We need new solution of link interference cancellation, including reports,

simulation results and source code.


15


Phase1 (~6 months): Theory and feasibility analysis. Answer the smallest

angle can achieve in theory and the main algorithm selection;

Phase 2 (~6 months): Performance optimization and algorithm complexity

analysis, give detail implemental structure design suggestion.


call for proposals/media/corporate/pdf/hirp/2016--microwa… · call for proposals microwave hirp...

Documents