瑞利信道下基于增量中继的放大转发机会选择性能分析

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。

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

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.