基于广义差分调制的多中继系统的选择  

Generalized Differential Modulation Based Relay Selection Method in Muti-Realy Channels

作　　者：蒋煜[1] 许魁[2] 陈晓明[2] 王飞[3] 张冬梅[2] JIANG Yu XU Kui CHEN Xiao-ming WANG Fei ZHANG Dong-mei(Postgraduate Team 2 CCE, PLAUST, Nanjing 210007, China College of Communications Engineering, PLAUST Unit 73667 of PLA, Nanjing 211132, China)

机构地区：[1]解放军理工大学通信工程学院研究生2队 [2]解放军理工大学通信工程学院 [3]中国人民解放军73667部队

出　　处：《军事通信技术》2016年第3期71-76,共6页Journal of Military Communications Technology

基　　金：国家自然科学基金资助项目(61371122;61301162)

摘　　要：文章将广义差分调制与模拟网络编码技术相结合,给出了一种基于广义差分调制与模拟网络编码的双向多中继系统。通过对系统的和误码率进行理论推导,得到了选择一个中继时系统的和误码率的闭式表达式,在此基础上给出了一种基于和误码率最小化的中继选择方法。仿真结果表明,与传统的基于差分调制的双向中继系统相比,提出的基于广义差分调制与模拟网络编码的双向中继系统具有更低的误码率。在多中继系统中,提出的基于和误码率最小化的中继选择方法能够有效改善多中继系统的误码率性能。In order to improve the bit error rate performance of the system,a novel relay selection strategy for two-way relay channels was proposed,based on the combination of generalized differential modulation and analog network coding.In particular,the systematic sum bit error rate was analyzed and closed formed expression was derived.According to the expression,the relay selection strategy was determined on the purpose of minimizing sum bit error rate.Simulation results show that,compared with the traditional two way relay channels that only adopt differential modulation,the combination of generalized differential modulation and analog network coding could significantly improve system＇s bit error rate performance.In multi-relay case,the proposed relay selection strategy could effectively improve the bit error rate performance of the system.

关 键 词：广义差分调制 中继选择 双向传输中继系统 

分 类 号：TN929.5[电子电信—通信与信息系统]