Energy efficiency of relay aided D2D communications underlaying cellular networks

Rui Zhang, Yongzhao Li, Cheng-Xiang Wang, Yuhan Ruan, Hailin Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Given the fact that the relay contributes to higher data rate or more reliable transmission at the expense of extra power consumption, we investigate the performance of relay aided Device-to-Device (D2D) communications from the perspective of energy efficiency (EE). Firstly, a closed-form expression for the EE of the considered network over Nakagami-m fading channels is derived. Then, taking into account the effects of practical modulation and coding schemes, we propose a channel quality indicator (CQI) based power control approach to maximize the EE of relay aided D2D communications while guaranteeing the interference limitation. The proposed scheme could avoid unnecessary power increment and is applicable in real time resource allocation. Simulation results demonstrate the validity of the theoretical analysis and illustrate that the CQI based scheme can improve EE.

Original languageEnglish
Title of host publication2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)
PublisherIEEE
ISBN (Electronic)9781538635315
ISBN (Print)9781538635292
DOIs
Publication statusPublished - 15 Feb 2018

Publication series

NameIEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)
PublisherIEEE
ISSN (Electronic)2166-9589

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Zhang, R., Li, Y., Wang, C-X., Ruan, Y., & Zhang, H. (2018). Energy efficiency of relay aided D2D communications underlaying cellular networks. In 2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) [8292545] (IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)). IEEE. https://doi.org/10.1109/PIMRC.2017.8292545