瑞利衰落信道上DF协作系统SER性能分析  

SER Performance Analysis of DF Cooperative System over Rayleigh Fading Channels

作　　者：徐伟尧[1] 王粤 王松[3] 

机构地区：[1]枣庄学院光电工程学院,277160 [2]枣庄市广播电视总台,277101 [3]山东省济宁市疾病预防控制中心,272000

出　　处：《现代电信科技》2015年第2期60-63,共4页Modern Science & Technology of Telecommunications

摘　　要：对平坦瑞利衰落信道上解码转发(DF)中继协作系统的误符号性能进行了分析。利用矩生成函数(MGF)方法 ,推导出了该系统采用相干检测M进制相移键控(MPSK)时的平均误符号率(SER)的闭合表达式。数值计算结果表明了接收端平均信噪比(SNR)越大,DF中继协作系统误码性能越好。仿真结果证实了理论分析结果的正确性。The symbol error rate （SER） performance of decode-and-forward （DF） relay cooperative system over flat Rayleigh fading channels is analyzed in this paper. Using the moment generating function （MGF） based analysis approach, the closed-form expressions for the average SER of coherently detected M-ary phase-shift keying （MPSK） for the system are derived. Numerical results show that better SER performance can be achieved by increasing the average receive sig-nal-to-noise ratio （SNR）. The correctness of theoreti-cal analysis is verified by simulation results.

关 键 词：协作系统 瑞利衰落 解码转发 M进制相移键控 误符号率 

分 类 号：TN911.22[电子电信—通信与信息系统]