采用两条支路分集接收的相关瑞利衰落信道容量

Capacity of Correlated Rayleigh Fading Channels Using Two-Branch Diversity Reception

本文研究采用两条支路最大比合并 (MRC)或选择合并 (SC)分集接收的相关瑞利衰落信道理论容量推导恒定发射功率自适应M进制正交幅度调制 (M QAM)的频谱效率 ,并将它们与独立同分布瑞利信道理论容量进行比较 ,其结果对收发信机之间无视距分量路径。

Closed-form solutions for the correlated Rayleigh fading channel capacity under maximum ratio combining (MRC)or selection combining (SC)diversity reception are obtained. A comparison between the correlated Rayleigh fading channel capacity and independent Rayleigh fading channel capacity is presented. The performance of constant-power adaptive M-ary quadrature amplitude modulation (M-QAM) schemes over correlated Rayleigh channels under MRC or SC diversity reception is investigated. Closed-form expressions for spectral efficiency assuming perfect channel estimation and negligible time delay are derived.