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HIRP OPEN 2016 Microwave
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Call for Proposals
Microwave
HIRP OPEN 2016
HIRP OPEN 2016 Microwave
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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
(innovation@huawei.com). We will reply as soon as possible.
HIRP OPEN 2016 Microwave
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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
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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
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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
HIRP OPEN 2016 Microwave
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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
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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.
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HIRP OPEN 2016 Microwave
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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
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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.
5 Expected Outcome and Deliverables
Mathematic derivation for phase pop detection and estimation algorithm is
needed. Simulation report (matlab or simulink) is supposed to deliver to
Huawei.
6 Phased Project Plan
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.
Click here to back to the Top Page
HIRP OPEN 2016 Microwave
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HIRPO20161103: Relative Delay Estimation Between
LOS-MIMO Channels
1 Theme: Microwave
2 Subject: microwave communication
List of Abbreviations
Los: Line of Sight
MIMO: Multiple Input and Multiple Output
3 Background
Trend,challenge ,value and objectives
The specific explanation of each parameter:
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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.
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5 Expected Outcome and Deliverables
We need an algorithm design to estimate delay information accurately,
including reports, simulation results and source code.
6 Phased Project Plan
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.
Click here to back to the Top Page
HIRP OPEN 2016 Microwave
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HIRPO20161104: Hub-site Interference Cancellation
1 Theme: Microwave
2 Subject: microwave communication
List of Abbreviations
UL: Uplink
DL: Downlink
MIMO: Multiple input and multiple output
3 Background
Trend,challenge ,value and objectives
figure 1. Hub-site transmission
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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.
5 Expected Outcome and Deliverables
We need new solution of link interference cancellation, including reports,
simulation results and source code.
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6 Phased Project Plan
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.
Click here to back to the Top Page
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