Large Scale Antenna Systems Made Practical: Advanced Signal Processing for Compact Deployments [LSAS-SP]
Lead Research Organisation:
Heriot-Watt University
Department Name: Sch of Engineering and Physical Science
Abstract
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Organisations
Publications
Zhang J
(2021)
Beam Drift in Millimeter Wave Links: Beamwidth Tradeoffs and Learning Based Optimization
in IEEE Transactions on Communications
Zhang J
(2022)
A Unified Framework for Precoding and Pilot Design for FDD Symbol-Level Precoding
in IEEE Transactions on Wireless Communications
Zhang J
(2023)
Joint Precoding and CSI Dimensionality Reduction: An Efficient Deep Unfolding Approach
in IEEE Transactions on Wireless Communications
Zhang J
(2022)
CSI-Free Geometric Symbol Detection via Semi-Supervised Learning and Ensemble Learning
in IEEE Transactions on Communications
Zhang J
(2023)
Beam Training and Tracking With Limited Sampling Sets: Exploiting Environment Priors
in IEEE Transactions on Communications
Zhang J
(2021)
Learning-Based Predictive Transmitter-Receiver Beam Alignment in Millimeter Wave Fixed Wireless Access Links
in IEEE Transactions on Signal Processing
Zeng H
(2022)
Multicluster-Coordination Industrial Internet of Things: The Era of Nonorthogonal Transmission
in IEEE Vehicular Technology Magazine
Yousif E
(2016)
A Frequency Domain Approach to Eigenvalue-Based Detection With Diversity Reception and Spectrum Estimation
in IEEE Transactions on Signal Processing
Yousif E
(2015)
Modeling and Performance Analysis of Multitaper Detection Using Phase-Type Distributions Over MIMO Fading Channels
in IEEE Transactions on Signal Processing
Xue J
(2015)
Performance Analysis for Multi-Way Relaying in Rician Fading Channels
in IEEE Transactions on Communications
Xue J
(2018)
Transceiver Design of Optimum Wirelessly Powered Full-Duplex MIMO IoT Devices
in IEEE Transactions on Communications
Xu T
(2022)
An Experimental Proof of Concept for Integrated Sensing and Communications Waveform Design
in IEEE Open Journal of the Communications Society
Xavier Glittas A
(2016)
Two-parallel pipelined fast Fourier transform processors for real-valued signals
in IET Circuits, Devices & Systems
Wei Z
(2022)
Beyond Nonorthogonal Multiple Access: New Role of Constructive Interference
in IEEE Wireless Communications Letters
Wei Z
(2022)
Physical Layer Anonymous Precoding: The Path to Privacy-Preserving Communications
in IEEE Wireless Communications
Wei Z
(2022)
Physical Layer Anonymous Precoding Design: From the Perspective of Anonymity Entropy
in IEEE Journal on Selected Areas in Communications
Wei Z
(2022)
Toward Multi-Functional 6G Wireless Networks: Integrating Sensing, Communication, and Security
in IEEE Communications Magazine
Wei Z
(2022)
Fundamentals of Physical Layer Anonymous Communications: Sender Detection and Anonymous Precoding
in IEEE Transactions on Wireless Communications
Wang W
(2015)
MIMO Antennas in Radar Applications
in International Journal of Antennas and Propagation
Wang F
(2015)
Security information factor based airborne radar RF stealth
in Journal of Systems Engineering and Electronics
Description | 1) Through the research funded on this grant, we developed the low-complexity direction estimation method which can be used in communication systems as well as radar systems, exploiting the compressive sensing. The principal of the compressive sensing is that the sparsity of a signal can be used to recover it from far fewer samples than required by the Shannon-Nyquist sampling theorem. This method will especially benefit in the large-scale antenna system, since the increase of the antenna elements leads to complexity in signal processing techniques. Moreover, we exploited the signal active (radio frequency (RF) chain) electronically steerable parasitic antenna (ESPAR) as a solution to interference mitigation using its beamforming capability. It is noted that the EPSAR antenna is a practical technique can be used for RF-chain reduction, which is critical for massive MIMO systems to reduce hardware cost and energy consumption. Further, to address the interference in multi-user MIMO systems, the channel state information at the transmitter (CSIT) is required; however, it is challenging to obtain a real-time perfect CSIT. The blind interference mitigation methods we developed do not require CSIT. 2) Developing new hybrid analog and digital beamforming for frequency selective channels: We proposed a low complexity and effective beamforming methods for frequency selective scenarios. Despite the simplicity of the methods, they achieve a comparable spectral efficiency compared to their digital beamformer counterpart. It is noted that our methods significantly reduces the computational complexity for massive MIMO systems and it improves the energy efficiency. In this research, we proposed new architectures for massive MIMO systems to reduce the cost and implementation complexity. The proposed methods rely on combination of switches, phase shifters and baseband processing. Our architectures and methods, not only reduce the cost and power consumption, they also reduce the computational complexity of the beamformers. 3)We proposed a novel approach to solve a challenging optimization problem (analogue-digital processing). Due to its nonconvex nature the reported works in the field often relied on computational demanding solutions, whose applicability can be questioned in practice. Moreover, they are often derived for either rich or poor scattering environments (which in turn depends on the operating frequency band), but not both. One of the main advantages of our proposed method, which has its roots in stochastic optimization, is that it can be used in environments with both rich and poor scattering characteristics. Additionally, the algorithm is quite fast and does not depend on the scattering; hence, the method is applicable to both sub-6 GHz (rich scattering) and millimetre wave (poor scattering) frequencies. The method can be widely adopted in hybrid transceiver design/optimization, due to its low complexity, performance and generality. 4) Asimilar approach was adopted for the 3D beamforming of hybrid transceivers using multi-active (RF chains) and multi-passive antenna arrays for ESPAR designs. A novel algorithm was derived and the study demonstrated that these types of transceivers can successfully emulate the (3D) beams of uniform rectangular arrays (URAs), while the number of active elements is reduced by 50%. As a result, the cost of each sensor can be significantly reduced, with no compromise in performance, which can have a huge impact in internet-of-things (IoT) or industrial applications, where the number deployed units is large. |
Exploitation Route | We will be presenting at conferences, workshops and to our industrial partners. |
Sectors | Aerospace, Defence and Marine,Digital/Communication/Information Technologies (including Software),Education |
Description | We have worked on some projects with non-academic partners (DSTL, UK and European Space Agency (ESA)), where we applied some findings of this project in a different setting. However, the results were not directly applicable to the problem set. |
First Year Of Impact | 2021 |
Sector | Aerospace, Defence and Marine,Digital/Communication/Information Technologies (including Software) |
Impact Types | Policy & public services |
Description | 5G UK Mapping workshop held at Glasgow, Scotland |
Geographic Reach | Local/Municipal/Regional |
Policy Influence Type | Contribution to a national consultation/review |
Description | 5G Rural-First: Rural Coverage and Dynamic Spectrum Access Testbed and Trial |
Amount | £4,300,000 (GBP) |
Organisation | Innovate UK |
Sector | Public |
Country | United Kingdom |
Start | 04/2018 |
End | 07/2019 |
Description | DSTL call for MASNET |
Amount | £60,000 (GBP) |
Organisation | Defence Science & Technology Laboratory (DSTL) |
Sector | Public |
Country | United Kingdom |
Start | 01/2016 |
End | 12/2017 |
Description | Thematic Partnership titled "Full Duplex and Cognitive Radio Architectures for Spectrally, Efficient Communications (FD-CR-ASEC)" |
Amount | £72,000 (GBP) |
Organisation | British Council |
Department | British Council in India |
Sector | Public |
Country | India |
Start | 04/2017 |
End | 03/2019 |
Description | Special Journal Issue organised in IEEE Journal of Selected Topics in Signal Processing on Introduction to the Issue on Hybrid Analog-Digital Signal Processing for Hardware-Efficient Large Scale Antenna Arrays ( Part I & Part II). |
Form Of Engagement Activity | A magazine, newsletter or online publication |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Postgraduate students |
Results and Impact | This special issue has been motivated by the recent increasing interest in: a) the practical challenges the deployment of large scale antenna systems (LSAS); b) the rising interest in the millimeter wave (mmWave) spectrum for 5G deployment which necessitates high-gain beamforming with low cost; c) the recent advances on analog-digital signal processing; and d) the ever-increasing interest in energy ef?cient communications. Accordingly, the aim of this Special Issue (SI) has been to gather the relevant contributions focusing on the practical challenges of hybrid analog-digital transmission as outlined above. We received a total of 59 submissions from researcher across the Globe of particularly high quality, spanning a broad range of topics. After a strict review process, we decided to accept 23 papers, which are published as two issues. |
Year(s) Of Engagement Activity | 2018 |
URL | https://ieeexplore.ieee.org/abstract/document/8363116 |
Description | Special Session "Hybrid Analog / Digital Signal Processing for Hardware-Efficient Large Scale Antenna Arrays" in the 25th European Signal Processing Conference (EUSIPCO), Kos, Greece, August 2017. |
Form Of Engagement Activity | Participation in an activity, workshop or similar |
Part Of Official Scheme? | No |
Geographic Reach | International |
Primary Audience | Postgraduate students |
Results and Impact | We organised a special session on "Hybrid Analog / Digital Signal Processing for Hardware-Efficient Large Scale Antenna Arrays" in the 25th European Signal Processing Conference (EUSIPCO), Kos, Greece, August 2017 which attracted many submissions in the area. |
Year(s) Of Engagement Activity | 2017 |
URL | https://www.eusipco2017.org/special-sessions/ |
Description | UK 5G Mapping Scotland Innovation Workshop held at Glasgow, Scotland in February 2018. |
Form Of Engagement Activity | A formal working group, expert panel or dialogue |
Part Of Official Scheme? | No |
Geographic Reach | National |
Primary Audience | Study participants or study members |
Results and Impact | The future goal of digitisation in Scotland is to create a 5G hub for ensuring that Scotland is in the forefront of 5G R&D, testing and deployment. Our research on cutting-edge 5G technologies - massive multiple-input multiple-output (MIMO) systems and non-orthogonal multiple access (NOMA) were presented at the 5G UK Mapping workshop held at Glasgow, Scotland in February 2018. The workshop had participants from leading industries such as CISCO, policy convenors from Digital Catapult, policy makers from Scottish Future Trust and academic representatives from University of Glasgow and West Scotland. The presentation was well received and there was unanimous support for our technical work. Our technical work was considered as one of the key innovations for realizing the 5G hub in Scotland. Further, the meeting concluded that rural areas in Scotland must require better connectivity and our objective is to fine tune our technical developments to achieve the goal of a well-connected 5G rural network in Scotland. |
Year(s) Of Engagement Activity | 2018 |
URL | https://www.digitalcatapultcentre.org.uk/open-calls/5g-uk-mapping-innovation-workshops/ |