文章基本信息

标题：Energy-Aware Hybrid Cooperative Relaying with Asymmetric Traffic
本地全文：下载
作者：Chen, Jian ; Lv, Lu ; Geng, Wenjin 等
期刊名称：ETRI Journal
印刷版ISSN：1225-6463
电子版ISSN：2233-7326
出版年度：2015
卷号：37
期号：4
页码：717-726
DOI：10.4218/etrij.15.0114.0522
语种：English
出版社：Electronics and Telecommunications Research Institute
摘要：In this paper, we study an asymmetric two-way relaying network where two source nodes intend to exchange information with the help of multiple relay nodes. A hybrid time-division broadcast relaying scheme with joint relay selection (RS) and power allocation (PA) is proposed to realize energy-efficient transmission. Our scheme is based on the asymmetric level of the two source nodes' target signal-to-noise ratio indexes to minimize the total power consumed by the relay nodes. An optimization model with joint RS and PA is studied here to guarantee hybrid relaying transmissions. Next, with the aid of our proposed intelligent optimization algorithm, which combines a genetic algorithm and a simulated annealing algorithm, the formulated optimization model can be effectively solved. Theoretical analyses and numerical results verify that our proposed hybrid relaying scheme can substantially reduce the total power consumption of relays under a traffic asymmetric scenario; meanwhile, the proposed intelligent optimization algorithm can eventually converge to a better solution.
关键词：Hybrid relaying strategy;asymmetric traffic;energy consumption;relay selection;power allocation;intelligent optimization algorithm;PA;RS