Massive MIMO for Future Wireless Communication Networks

Lead Research Organisation: University of Edinburgh
Department Name: Sch of Engineering

Abstract

The spectrum crunch is a global phenomenon, where wireless networks constrained by scarce spectrum resource cannot keep pace with the explosion in mobile broadband use, particularly at a time when smartphones and tablets are becoming even more prevalent and heavily used. Every new opportunity has to be maximally exploited to cope with this spectrum deficit and meet the demands of explosive broadband usage by pushing more data through existing spectrum. Massive multiple-input multiple-output (MIMO), an advanced antenna technology only developed in 2010 offers one such opportunity. Massive MIMO enables a sparse infrastructure network, whereby a single base station (BS) is powerful enough to eliminate inter-cell interference through highly directional beamforming, and hence avoid the need for any cell-to-cell coordination. Initial work, particularly the experiments in have demonstrated the feasibility of massive MIMO. However, there is still lack of insightful understanding of the fundamental limits of massive MIMO, and also there is a large gap in the performance evaluation of massive MIMO under ideal and non-ideal practical conditions. The aim of this project is to establish a unified theoretical framework for the fundamental limits of massive MIMO with various practical constraints, and develop sophisticated signal processing algorithms to realize the concept of massive MIMO in realistic environments. The novelty of this project lies in the fact that advanced mathematical tools, such as random matrix theory and stochastic geometry, will be used to capture the dynamic nature of multi-user wireless channels. Sophisticated signal processing methods, such as game theoretic algorithms and compressed sensing, will be applied to massive MIMO in order to combat the practical constraints, such as frequency selective channel fading and limited channel feedback.

Publications

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Aquilina P (2017) Linear Interference Alignment in Full-Duplex MIMO Networks With Imperfect CSI in IEEE Transactions on Communications

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Aquilina P (2017) Weighted Sum Rate Maximization in Full-Duplex Multi-User Multi-Cell MIMO Networks in IEEE Transactions on Communications

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Biswas S (2016) On the Performance of mmWave Networks Aided by Wirelessly Powered Relays in IEEE Journal of Selected Topics in Signal Processing

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Biswas S (2016) Performance Analysis of Large Multiuser MIMO Systems With Space-Constrained 2-D Antenna Arrays in IEEE Transactions on Wireless Communications

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Biswas S (2016) On the Performance of Relay Aided Millimeter Wave Networks in IEEE Journal of Selected Topics in Signal Processing

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Cirik A (2016) QoS Considerations for Full Duplex Multiuser MIMO Systems in IEEE Wireless Communications Letters

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Cirik A (2016) QoS Considerations for Full Duplex Multiuser MIMO Systems in IEEE Wireless Communications Letters

 
Description My work in massive MIMO showed for the first time in a realistic setting, the direct tradeoff in performance when fitting increasing numbers of antennas in fixed physical spaces, to optimize the true power efficiency of massive MIMO transmitters. My work for the first time explored the concept of constructive interference for cognitive radio with the aim of exploiting interference as useful signal power. This has led to new precoding designs where a wide range of scalable tradeoffs between performance and complexity have been offered. My collaborative work in the European project CROWN project showed for the first time the design of adaptive transmit beampatterns for an electronically steerable parasitic antenna transceiver which relies on a single RF front to meet the low cost, power beamforming solution and sensing performance. These works have been taken by our industrial partners for further development of 5G standard and products.
Exploitation Route These works have been taken by our industrial partners for further development of 5G standard and products.
Sectors Digital/Communication/Information Technologies (including Software),Education

URL http://www.profratnarajah.org
 
Description The project, we demonstrated the highly distributed MIMO C-RAN proof-of-concept for 5G networks at the 24th Edition of the European Conference on Networks and Communications, Paris, France, June 2015. Alcatel lucent Paris - take this work further.
First Year Of Impact 2017
Sector Digital/Communication/Information Technologies (including Software),Education
Impact Types Economic

 
Description Organising a one day workshop at the IEEE 81st Vehicular Technology Conference: VTC2015-Spring, Glasgow, Scotland, 11-14 May 2015 
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 Organising a one day workshop at the IEEE 81st Vehicular Technology Conference: VTC2015-Spring, Glasgow, Scotland, 11-14 May 2015.
The workshop title is "International Workshop on Emerging MIMO Technologies in 5G Wireless Cellular Networks"
Year(s) Of Engagement Activity 2015