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Full-duplex massive MIMO multi-pair two-way AF relaying: energy efficiency optimization

Full-duplex massive MIMO multi-pair two-way AF relaying: energy efficiency optimization
Full-duplex massive MIMO multi-pair two-way AF relaying: energy efficiency optimization

We consider two-way amplify-and-forward (AF) relaying, where multiple full-duplex user pairs exchange information via a shared full-duplex massive multiple-input multipleoutput (MIMO) relay. Most of the previous massive MIMO relaying works maximize the spectral efficiency (SE). By contrast, we maximize the non-convex energy efficiency (EE) metric by approximating it as a pseudo-concave (PC) problem, which is then solved using the classic Dinkelbach approach. We also maximize EE of the least energy-efficient user relying on the max-min approach. We also compare SE and EE of the proposed design with existing full-duplex systems and quantify the significant improvement achieved by the proposed algorithm. We also compare EE of the proposed full-duplex system to that of its halfduplex counterparts, and characterize the self-loop and inter-user interference regimes, for which the proposed full-duplex system outperforms the half-duplex ones.

Amplify and forwardamplify, Dinkelbach, energy efficiency, full-duplex, pseudo-concave
0090-6778
1-19
Sharma, Ekant
4ccc08cf-bfd6-4105-995e-17fa8c73c8c9
Budhiraja, Rohit
5efe5870-d98a-4b27-ba80-2bf7b5207bcf
Vasudevan, K.
7fc1d127-bf21-48da-a5ee-c304996e4aa2
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Sharma, Ekant
4ccc08cf-bfd6-4105-995e-17fa8c73c8c9
Budhiraja, Rohit
5efe5870-d98a-4b27-ba80-2bf7b5207bcf
Vasudevan, K.
7fc1d127-bf21-48da-a5ee-c304996e4aa2
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Sharma, Ekant, Budhiraja, Rohit, Vasudevan, K. and Hanzo, Lajos (2018) Full-duplex massive MIMO multi-pair two-way AF relaying: energy efficiency optimization. IEEE Transactions on Communications, 1-19. (doi:10.1109/TCOMM.2018.2822273).

Record type: Article

Abstract

We consider two-way amplify-and-forward (AF) relaying, where multiple full-duplex user pairs exchange information via a shared full-duplex massive multiple-input multipleoutput (MIMO) relay. Most of the previous massive MIMO relaying works maximize the spectral efficiency (SE). By contrast, we maximize the non-convex energy efficiency (EE) metric by approximating it as a pseudo-concave (PC) problem, which is then solved using the classic Dinkelbach approach. We also maximize EE of the least energy-efficient user relying on the max-min approach. We also compare SE and EE of the proposed design with existing full-duplex systems and quantify the significant improvement achieved by the proposed algorithm. We also compare EE of the proposed full-duplex system to that of its halfduplex counterparts, and characterize the self-loop and inter-user interference regimes, for which the proposed full-duplex system outperforms the half-duplex ones.

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Full-Duplex Massive MIMO Multi-Pair Two-Way AF Relaying: Energy Efficiency Optimization - Accepted Manuscript
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More information

Accepted/In Press date: 31 March 2018
e-pub ahead of print date: 2 April 2018
Additional Information: AM added.
Keywords: Amplify and forwardamplify, Dinkelbach, energy efficiency, full-duplex, pseudo-concave

Identifiers

Local EPrints ID: 419954
URI: http://eprints.soton.ac.uk/id/eprint/419954
ISSN: 0090-6778
PURE UUID: 302efed5-fc29-4867-85a2-19e3e9e7f91c
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 24 Apr 2018 16:30
Last modified: 07 Oct 2020 01:33

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