基于联合优化函数选择最优中继的研究.pdfVIP

Hans Journal of Wireless Communications 无线通信, 2014, 4, 88-93 Published Online December 2014 in Hans. /journal/hjwc /10.12677/hjwc.2014.46014 Study of Optimal Relay Selection Based on Joint Optimization Function Mali Chen, Wensheng Sun, Jixin Zeng, Tao Chen Communication Engineering, Hangzhou Dianzi University, Hangzhou Email: CML_26@163.com nd th th Received: Oct. 22 , 2014; revised: Nov. 16 , 2014; accepted: Nov. 20 , 2014 Copyright © 2014 by authors and Hans Publishers Inc. This work is licensed under the Creative Commons Attribution International License (CC BY). /licenses/by/4.0/ Abstract This paper introduces the optimal relay selection algorithm based on joint optimization function, and it applies the optimal power distribution mechanism which can allocate the source and relay power reasonably. Under condition that the total power is limited, the proposed optimal power distribution mechanism, compared with the equal power distribution mechanism, can make the power distribution more effective, and nodes in the network have a longer lifetime. The simula- tion results based on MATALAB show that the relay, which uses the optimal power distribution mechanism based on the joint optimization function, has a better performance. Keywords Cooperative Communication, Optimal Relay Selection, Equal Power and Optimal Power Allocation, SNR and BER 基于联合优化函数选择最优中继的研究 陈玛丽，孙文胜，曾纪欣，陈 韬 杭州电子科技大学通信工程学院，杭州 Email: CML_26@163.com 收稿日期：2014年10月22 日；修回日期：2014年11月16 日；录用日期：2014年11月20 日 88 基于联合优化函数选择最优中继的研究 摘 要 该文介绍了基于联合优化函数进行最优中