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On the spectral efficiency of space-constrained massive MIMO with linear receivers

Zhang, J; Dai, L; Matthaiou, M; Masouros, C; Jin, S; (2016) On the spectral efficiency of space-constrained massive MIMO with linear receivers. In: 2016 IEEE International Conference on Communications: Proceedings. Institute of Electrical and Electronics Engineers (IEEE) Green open access

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Abstract

In this paper, we investigate the spectral efficiency (SE) of massive multiple-input multiple-output (MIMO) systems with a large number of antennas at the base station (BS) accounting for physical space constraints. In contrast to the vast body of related literature, which considers fixed inter-element spacing, we elaborate on a practical topology in which an increase in the number of antennas in a fixed total space induces an inversely proportional decrease in the inter-antenna distance. For this scenario, we derive exact and approximate expressions, as well as simplified upper/lower bounds, for the SE of maximum-ratio combining (MRC), zero-forcing (ZF) and minimum mean-squared error receivers (MMSE) receivers. In particular, our analysis shows that the MRC receiver is non-optimal for space-constrained massive MIMO topologies. On the other hand, ZF and MMSE receivers can still deliver an increasing SE as the number of BS antennas grows large. Numerical results corroborate our analysis and show the effect of the number of antennas, the number of users, and the total antenna array space on the sum SE performance.

Type: Proceedings paper
Title: On the spectral efficiency of space-constrained massive MIMO with linear receivers
Event: ICC 2016: 2016 IEEE International Conference on Communications, 22-27 May 2016, Kuala Lumpur, Malaysia
ISBN-13: 9781479966653
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/ICC.2016.7511518
Publisher version: http://dx.doi.org/10.1109/ICC.2016.7511518
Language: English
Additional information: Copyright © 2016 by the Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Keywords: MIMO, Antenna arrays, Fading channels, Receiving antennas, Uplink
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1501997
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