基于AF协作的多中继M2M通信系统的SER性能分析  

SER analysis of cooperative M2M communications assisted by multiple AF relays

作　　者：张南[1] 宫丰奎[1] 葛建华[1] 

机构地区：[1]西安电子科技大学ISN国家重点实验室,陕西西安710071

出　　处：《通信学报》2012年第5期66-71,共6页Journal on Communications

基　　金：国家自然科学基金资助项目(61001207);长江学者和创新团队发展计划基金资助项目(IRT0852);中央高校基本科研业务费专项资金资助项目(K50510010008);高等学校学科创新引智计划基金资助项目(B08038);国家重点基础研究发展计划("973"计划)基金资助项目(2012CB316100)~~

摘　　要：基于移动端对移动端(M2M)信道衰落服从重叠Nakagami-m分布的假设,研究M-PSK调制下移动放大转发(AF)中继对M2M系统的性能影响。利用矩母函数(MGF)方法,推导了多AF中继辅助M2M通信(MAF-M2M)系统的误符号率(SER)性能下界表达式,并结合近似概率密度函数(PDF)方法,给出了更为逼近的近似SER表达式。结果表明,目的端采用最大比合并时,AF中继可以明显改善不同m参数信道下M2M通信系统性能。计算机仿真结果验证了性能界和近似SER的正确性。For the mobile-to-mobile （M2M） communication assisted by multiple mobile amplify-and-forward （AF） relays （MAF-M2M）, the lower bound of SER with M-PSK was derived by using the MGF approach, where a generalized cascaded Nakagami-m channel model was used to provide a realistic description of the M2M channel. A more asymptotic SER expression was also derived by combining with an approximated PDF method. It was shown that the performance of M2M communication systems over channels with different parameter m can be obviously improved if AF relays are used. The simulated SER curves prove the rightness of the derived lower bound and approximated SER expressions.

关 键 词：M2M 放大转发 矩母函数 多中继 SER 

分 类 号：TN911[电子电信—通信与信息系统]