Nakagami-m衰落信道下机会中继系统的性能  

Performances of Opportunistic Relaying System in Nakagami-m Fading Channels

作　　者：张南[1] 葛建华[1] 宫丰奎[1] 

机构地区：[1]西安电子科技大学综合业务网理论及关键技术国家重点实验室,陕西西安710071

出　　处：《华南理工大学学报（自然科学版）》2010年第6期24-28,共5页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家科技重大专项项目(2009ZX03003-003;2009ZX03003-004);NSFC-广东联合基金重点项目(U0635003);高等学校学科创新引智计划项目(B08038);西安电子科技大学中央高校基本科研业务费专项资金资助项目(JY10000901012;JY10000901016)

摘　　要：针对多中继侦听单节点译码转发的机会中继系统,分析了其在统计独立不同分布的Nakagami-m衰落信道下的理论性能.基于接收端信噪比的矩生成函数的闭合表达式,推导了任意中继数目下系统中断概率和误符号率的闭式解,并通过仿真验证了其正确性.该闭式解可用于评估机会中继系统在Nakagami-m衰落信道下的性能,为实际工程应用提供理论参考.This paper theoretically analyzes the performances of opportunistic decode-and-forward relaying system with multi-relay in dependent but non-identical Nakagami-m fading channels.Based on the derived closed-form expressions for the moment-generating function of arbitrary signal-to-noise ratios,the closed-form expressions of the outage probability and the symbol error rate of the relaying system with arbitrary relays are obtained and further verified by simulation.The obtained closed-form solutions can be used to evaluate the performances of opportunistic relaying systems in Nakagami-m fading channels and provide theoretical references for practical engineering projects.

关 键 词：通信技术 协作分集 机会中继 中断概率 误符号率 译码转发 

分 类 号：TN929.5[电子电信—通信与信息系统]