Spectral- and Energy-Efficiency of Multi-Pair Two-Way Massive MIMO Relay Systems Experiencing Channel Aging

dc.contributor.authorLi, Lixin
dc.contributor.authorHe, Jiao
dc.contributor.authorYang, Lie-Liang
dc.contributor.authorHan, Zhu
dc.contributor.authorPan, Miao
dc.contributor.authorChen, Wei
dc.contributor.authorZhang, Huisheng
dc.contributor.authorLi, Xu
dc.date.accessioned2020-05-11T16:14:36Z
dc.date.available2020-05-11T16:14:36Z
dc.date.issued4/2/2019
dc.description.abstractIn 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.
dc.identifier.citationCopyright 2019 IEEE Access. Recommended citation:Li, Lixin, Jiao He, Lie-Liang Yang, Zhu Han, Miao Pan, Wei Chen, Huisheng Zhang, and Xu Li. "Spectral-and Energy-Efficiency of Multi-Pair Two-Way Massive MIMO Relay Systems Experiencing Channel Aging." IEEE Access 7 (2019): 46014-46032. DOI: 10.1109/ACCESS.2019.2908882. URL: https://ieeexplore.ieee.org/abstract/document/8679985. Reproduced in accordance with the original publisher's licensing terms and with permission from the author(s).
dc.identifier.urihttps://hdl.handle.net/10657/6440
dc.publisherIEEE Access
dc.subjectMassive MIMO
dc.subjecttwo-way relay
dc.subjectfull-duplex
dc.subjecthalf-duplex
dc.subjectchannel aging
dc.subjectmaximum-ratio combining/maximum-ratio transmission
dc.subjectzero-forcing reception/zero-forcing transmission
dc.subjectspectral-efficiency
dc.subjectenergy-efficiency
dc.titleSpectral- and Energy-Efficiency of Multi-Pair Two-Way Massive MIMO Relay Systems Experiencing Channel Aging
dc.typeArticle

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