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On the energy efficiency of massive MIMO with space-constrained 2D antenna arrays

Biswas, S; Masouros, C; Ratnarajah, T; (2016) On the energy efficiency of massive MIMO with space-constrained 2D antenna arrays. In: 2016 IEEE International Conference on Communications (ICC). IEEE Green open access

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Abstract

We examine the deployment of a large multi-user multiple-input multiple-output (MIMO) system and the resulting Energy Efficiency (EE) considering a 2D rectangular array with increasing antenna elements within a fixed physical space. The resulting increasing mutual coupling and correlation among the base station (BS) antennas are incorporated by deriving a practical mutual coupling matrix which considers coupling among all antenna elements. We also provide a realistic analysis of the energy consumption using a new model, taking into account the circuit power consumption as a function of the number of BS antennas and then present a performance analysis of the system with respect to EE. Our analysis shows that while spectral efficiency increases with increasing number of BS antennas in a massive MIMO system, EE does not increase boundlessly when the increasing number of antennas are to be accommodated within a fixed physical space and the total power consumed is considered to be a function of the BS antennas. Accordingly, analytic expressions for the optimum number of antennas to attain maximum EE are obtained.

Type: Proceedings paper
Title: On the energy efficiency of massive MIMO with space-constrained 2D antenna arrays
Event: IEE ICC 2016 - IEEE International Conference on Communications
Location: Kuala Lumpur, Malaysia
Dates: 23 May 2016 - 27 May 2016
ISBN-13: 9781479966646
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/ICC.2016.7511183
Language: English
Additional information: Copyright © 2016 IEEE. 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: Antenna arrays, Mutual coupling, MIMO, Correlation, Uplink, Dipole antennas, telecommunication power management, antenna arrays, MIMO communication, base station antennas, energy efficiency, massive MIMO system, space constrained 2D antenna arrays, multi-user multiple-input multiple-output system, antenna elements, mutual coupling, massive MIMO, Antenna correlation, mutual coupling, energy efficiency
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/1513961
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