瑞利信道下基于增量中继的放大转发机会选择性能分析  

Performance analysis of incremental-opportunistic-relay amplify-and-forward technique over Rayleigh fading channels

作　　者：高媛媛[1] 张亚龙[2] 臧国珍[1] 苏世彬 刘尧[2] 丁武强[2] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007 [2]太原卫星发射中心,山西太原030000 [3]解放军92941部队,辽宁葫芦岛125001

出　　处：《解放军理工大学学报（自然科学版）》2012年第4期355-359,共5页Journal of PLA University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(60972050)

摘　　要：为一步提高协同通信的平均频谱效率性能,采用增量中继的方法对放大转发机会选择中继节点选择策略进行了改进,并针对Rayleigh衰落信道,推导了当目的节点分别采用最大比值和选择合并方式时,基于增量中继的放大转发机会选择策略的中断概率和平均频谱效率的性能下界。采用MATLAB软件对系统性能进行了计算机仿真,仿真结果验证了理论分析的准确性。结果表明,当目的端节点采用最大比值合并和选择性合并方式时,采用增量中继可较大提高机会选择中继节点选择策略的平均频谱效率性能。To improve average spectral efficiency of cooperative communication,incremental relaying using opportunistic with amplify and forward were investigated.Aiming at the Rayleigh fading channels,the lower bounds were derived for the outage probability and average spectral efficiency of the cooperative system with incremental opportunistic-relay amplify-and-forward protocol when the destination adopted maximal ratio combining（MRC） and selection combining（SC）,respectively.Computer simulation verifies this analysis.Results show that spectral efficiency of the incremental relaying using opportunistic outperforms the opportunistic relaying.

关 键 词：放大转发 增量中继 中断概率 平均频谱效率 

分 类 号：TN911.2[电子电信—通信与信息系统]