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Low-Latency Driven Energy Efficiency for D2D Communications

Chu, Zheng, Hao, Wanming, Xiao, Pei, Zhou, Fuhui and Hu, Rose Qingyang (2019) Low-Latency Driven Energy Efficiency for D2D Communications In: IEEE International Conference on Communications, 20 - 24 May 2019, Shanghai.

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Abstract

Low latency and energy efficiency are two important performance requirements in various fifth-generation (5G) wire-less networks. In order to jointly design the two performance requirements, in this paper a new performance metric called effective energy efficiency (EEE) is defined as the ratio of the effective capacity (EC) to the total power consumption in a cellular network with underlaid device to device (D2D) communications. We aim to maximize the EEE of the D2D network subject to the D2D device power constraints and the minimum rate constraint of the cellular network. Due to the non-convexity of the problem, we propose a two-stage difference-of-two-concave (DC) function approach to solve this problem. Towards that end, we first introduce an auxiliary variable to transfer the fractional objective function into a subtractive form. We then propose a successive convex approximation (SCA) algorithm to iteratively solve the resulting non-convex problem. The convergence and the global optimality of the proposed SCA algorithm are both analyzed. The numerical results are presented to demonstrate the effectiveness of the proposed algorithm.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
NameEmailORCID
Chu, Zhengzheng.chu@surrey.ac.uk
Hao, Wanmingw.hao@surrey.ac.uk
Xiao, PeiP.Xiao@surrey.ac.uk
Zhou, Fuhui
Hu, Rose Qingyang
Date : 4 February 2019
Copyright Disclaimer : Copyright 2019 IEEE
Depositing User : Charlene King
Date Deposited : 20 Mar 2019 11:00
Last Modified : 20 May 2019 02:08
URI: http://epubs.surrey.ac.uk/id/eprint/850812

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