Joint relay selection and power allocation for amplify-and-forward two-path relaying networks  

作　　者：PANG LiHua LI JianDong ZHANG Yang 

机构地区：[1]State Key Laboratory of Integrated Service Networks, Xidian University

出　　处：《Science China(Information Sciences)》2013年第10期127-133,共7页中国科学（信息科学）（英文版）

基　　金：supported by National Natural Science Foundation of China(Grant No.61231008);National Basic Research Program of China(973)(Grant No.2009CB320404);Program for Changjiang Scholars and Innovative Research Team in University(Grant No.IRT0852);the 111 Project(Grant No.B08038)

摘　　要：This paper presents a joint relay selection and power allocation scheme for amplify-and-forward two-path relaying networks, in which different relay nodes forward information symbols alternatively in adja- cent time slots. Our approach is based on the maximization of the received signal-to-noise ratio under total power consumption by the transmission of the symbol. We show that in spite of inter-relay interferences, the maximization problem has a closed-form solution. Simulation results explicitly indicate that the performance of proposed approach outmatches the existing methods including equal power allocation and one-path relaying.This paper presents a joint relay selection and power allocation scheme for amplify-and-forward two-path relaying networks, in which different relay nodes forward information symbols alternatively in adja- cent time slots. Our approach is based on the maximization of the received signal-to-noise ratio under total power consumption by the transmission of the symbol. We show that in spite of inter-relay interferences, the maximization problem has a closed-form solution. Simulation results explicitly indicate that the performance of proposed approach outmatches the existing methods including equal power allocation and one-path relaying.

关 键 词：relay selection power allocation AMPLIFY-AND-FORWARD two-path relaying inter-relay interference 

分 类 号：TN925[电子电信—通信与信息系统] TN722.75[电子电信—信息与通信工程]