Residual energy based multi-relay selection and power allocation scheme in two-way relay network

被引：0
|
作者：
DAI Cui-qin [1 ]
LI Fu-jia [1 ]
ZHANG Zu-fan [1 ]
机构：
[1] Chongqing Key Lab of Mobile Communication Technology, Chongqing University of Posts and Telecommunications
来源：
The Journal of China Universities of Posts and Telecommunications | 2013年 / 04期
基金：
中国国家自然科学基金;
关键词：
two-way relay; remaining energy; multi-relay selection; power allocation; sum-rate;
D O I：
暂无
中图分类号：
TN925 [无线电中继通信、微波通信];
学科分类号：
080402 ; 080904 ; 0810 ; 081001 ;
摘要：
In this paper, we have proposed a multi-relay selection and power allocation scheme for two-way relay network which aims to maximize the sum-rate of two-way relay system.First, to prolong network lifetime, a multi-relay selection strategy is proposed in which both channel state information (CSI) and remaining energy (RE) are considered.Next, a multi-relay power allocation algorithm based on convex optimization (MRPA-CO) is presented.To reduce the computational complexity, it can be divided into two steps: terminal nodes power allocation (TNPA) and relay nodes power allocation (RNPA).Simulation results indicate that the proposed relay selection strategy can significantly prolong network lifetime compared to other relay selection strategies which consider CSI only, and the MRPA-CO algorithm has great advantage over equal power allocation (EPA) on sum-rate in two-way relay network.
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页码：39 / 45
页数：7
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