Full-Duplex Versus Half-Duplex Amplify-and-Forward Relaying: Which is More Energy Efficient in 60-GHz Dual-Hop Indoor Wireless Systems?

Wei, Zhongxiang, Zhu, Xu ORCID: 0000-0002-7371-4595, Sun, Sumei, Huang, Yi ORCID: 0000-0001-7774-1024, Dong, Linhao and Jiang, Yufei (2015) Full-Duplex Versus Half-Duplex Amplify-and-Forward Relaying: Which is More Energy Efficient in 60-GHz Dual-Hop Indoor Wireless Systems? IEEE Journal on Selected Areas in Communications, 33 (12). pp. 2936-2947.

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Official URL: https://ieeexplore.ieee.org/document/7274314

Abstract

We provide a comprehensive energy efficiency (EE) analysis of the full-duplex (FD) and half-duplex (HD) amplify-and-forward (AF) relay-assisted 60-GHz dual-hop indoor wireless systems, aiming to answer the question of which relaying mode is greener (more energy efficient) and to address the issue of EE optimization. We develop an opportunistic relaying mode selection scheme, where FD relaying with one-stage self-interference cancellation (passive suppression) or two-stage self-interference cancellation (passive suppression + analog cancellation) or HD relaying is opportunistically selected, together with transmission power adaptation, to maximize the EE with given channel gains. A low-complexity joint mode selection and EE optimization algorithm are proposed. We show a counter-intuitive finding that with a relatively loose maximum transmission power constraint, FD relaying with two-stage self-interference cancellation is preferable to both FD relaying with one-stage self-interference cancellation and HD relaying, resulting in a higher optimized EE. A full range of power consumption sources is considered to rationalize our analysis. The effects of imperfect self-interference cancellation at relay, drain efficiency, and static circuit power on EE are investigated. Simulation results verify our theoretical analysis.

Item Type:	Article
Uncontrolled Keywords:	Full-duplex, half-duplex, relay, 60 GHz, energy efficiency (EE), optimization, Full-duplex (FD), half-duplex (HD), energy efficiency
Depositing User:	Symplectic Admin
Date Deposited:	17 May 2017 06:26
Last Modified:	19 Jan 2023 07:04
DOI:	10.1109/JSAC.2015.2481211
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3007498