摘要
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.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2003年第7期1018-1021,共4页
Acta Electronica Sinica
基金
国家自然科学基金 (No 69972 0 1 4 )
教育部<高等学校骨干教师资助计划>资助项目
浙江省自然科学基金 (No 60 0 0 68)
关键词
相关瑞利衰落信道
信道容量
分集接收
最大比合并
选择合并
Diversity reception
Mathematical models
Probability density function
Quadrature amplitude modulation
Rayleigh fading
Signal to noise ratio