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Spectral- and energy-efficiency of multi-pair two-way massive MIMO relay systems experiencing channel aging

Spectral- and energy-efficiency of multi-pair two-way massive MIMO relay systems experiencing channel aging
Spectral- and energy-efficiency of multi-pair two-way massive MIMO relay systems experiencing channel aging

In this paper, we demonstrate the impact of channel aging on the spectral- and energy-efficiency performance of the multi-pair two-way massive MIMO relay (MTW-MMR) systems, where massive antennas are deployed at the relay and the amplify-and-forward (AF) protocol is operated. By assuming the maximum-ratio combining/maximum-ratio transmission (MRC/MRT) or zero-forcing reception/ zero-forcing transmission (ZFR/ZFT) relaying processing, we analyze the spectral efficiency (SE) and energy efficiency (EE) of the MTW-MMR systems experiencing both imperfect channel estimation and channel aging based on the four proposed power-scaling schemes. Furthermore, we compare the performance of the full-duplex (FD)-assisted MTW-MMR systems with that of the half-duplex (HD)-assisted MTW-MMR systems, showing that the FD mode outperforms the HD mode with the interference level not exceeding -15 dB. Our studies show that channel aging may significantly degrade the achievable performance in terms of SE and EE. However, the inter-pair interference caused by the other user pairs and the self-interference can be effectively mitigated by the MRC/MRT processing or ZFR/ZFT processing at the relay.

channel aging, energy-efficiency, full-duplex, half-duplex, Massive MIMO, maximum-ratio combining/maximum-ratio transmission, spectral-efficiency, two-way relay, zero-forcing reception/zero-forcing transmission
2169-3536
46014-46032
Li, Lixin
31d41958-daec-4a24-a9f5-0f30122b1dd2
He, Jiao
e2adb1ac-8e94-4d5e-a8aa-5d013f5e5943
Yang, Lie Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Han, Zhu
28e29deb-d470-4165-b198-0923aeac3689
Pan, Miao
a8288d4b-c537-4d9f-ac23-c45349cdcba7
Chen, Wei
99d5f0b4-a927-4e63-be3c-25fbbe9933bc
Zhang, Huisheng
1ab467cb-160e-411e-8d40-e027b64f2186
Li, Xu
b7c3b09c-c497-4ae2-8444-ec2e65308121
Li, Lixin
31d41958-daec-4a24-a9f5-0f30122b1dd2
He, Jiao
e2adb1ac-8e94-4d5e-a8aa-5d013f5e5943
Yang, Lie Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Han, Zhu
28e29deb-d470-4165-b198-0923aeac3689
Pan, Miao
a8288d4b-c537-4d9f-ac23-c45349cdcba7
Chen, Wei
99d5f0b4-a927-4e63-be3c-25fbbe9933bc
Zhang, Huisheng
1ab467cb-160e-411e-8d40-e027b64f2186
Li, Xu
b7c3b09c-c497-4ae2-8444-ec2e65308121

Li, Lixin, He, Jiao, Yang, Lie Liang, Han, Zhu, Pan, Miao, Chen, Wei, Zhang, Huisheng and Li, Xu (2019) Spectral- and energy-efficiency of multi-pair two-way massive MIMO relay systems experiencing channel aging. IEEE Access, 7, 46014-46032, [6287639]. (doi:10.1109/ACCESS.2019.2908882).

Record type: Article

Abstract

In this paper, we demonstrate the impact of channel aging on the spectral- and energy-efficiency performance of the multi-pair two-way massive MIMO relay (MTW-MMR) systems, where massive antennas are deployed at the relay and the amplify-and-forward (AF) protocol is operated. By assuming the maximum-ratio combining/maximum-ratio transmission (MRC/MRT) or zero-forcing reception/ zero-forcing transmission (ZFR/ZFT) relaying processing, we analyze the spectral efficiency (SE) and energy efficiency (EE) of the MTW-MMR systems experiencing both imperfect channel estimation and channel aging based on the four proposed power-scaling schemes. Furthermore, we compare the performance of the full-duplex (FD)-assisted MTW-MMR systems with that of the half-duplex (HD)-assisted MTW-MMR systems, showing that the FD mode outperforms the HD mode with the interference level not exceeding -15 dB. Our studies show that channel aging may significantly degrade the achievable performance in terms of SE and EE. However, the inter-pair interference caused by the other user pairs and the self-interference can be effectively mitigated by the MRC/MRT processing or ZFR/ZFT processing at the relay.

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Accepted/In Press date: 22 March 2019
e-pub ahead of print date: 2 April 2019
Keywords: channel aging, energy-efficiency, full-duplex, half-duplex, Massive MIMO, maximum-ratio combining/maximum-ratio transmission, spectral-efficiency, two-way relay, zero-forcing reception/zero-forcing transmission

Identifiers

Local EPrints ID: 431368
URI: http://eprints.soton.ac.uk/id/eprint/431368
ISSN: 2169-3536
PURE UUID: e61a47b2-1b08-44d6-b6e6-36188bcc984a
ORCID for Lie Liang Yang: ORCID iD orcid.org/0000-0002-2032-9327

Catalogue record

Date deposited: 30 May 2019 16:30
Last modified: 15 Sep 2021 01:42

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Contributors

Author: Lixin Li
Author: Jiao He
Author: Lie Liang Yang ORCID iD
Author: Zhu Han
Author: Miao Pan
Author: Wei Chen
Author: Huisheng Zhang
Author: Xu Li

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