MIMO信道中衰落信号的空域相关性评估  

Evaluating the Spatial Correlation of Fading Signals in MIMO Channels

作　　者：李忻[1] 聂在平[1] 

机构地区：[1]电子科技大学电子工程学院,四川成都610054

出　　处：《电子学报》2004年第12期1949-1953,共5页Acta Electronica Sinica

基　　金：国家 8 63计划 (No .2 0 0 2AA1 2 30 32 )

摘　　要：将MIMO(多输入多输出 )信道建立为Nakagami衰落信道 ,进一步推导单元天线接收多径衰落信号的空域相关系数的通用解析式 ,并在均匀分布、余弦分布、高斯分布和拉式分布的来波功率角谱下分别进一步评估接收信号的空域相关性 ,分析各参数对相关系数的影响 ,比较各种来波功率角谱下相关性的数值结果 。The analytical and general expressions for the spatial correlation of fading signals at the receiver antenna elements in MIMO channels with Nakagami fading and the correlation with uniform, cosine, Gaussian and Laplacian power azimuth spectrum (PAS) distributions are derived respectively in this paper. The effect of various parameters on the spatial correlation is explored in detail, which is shown by numerical results. This is the basis of precisely analyzing the performance of MIMO system and designing the corresponding antenna arrays.

关 键 词：MIMO信道 空域相关性 多径衰落 功率角谱 

分 类 号：TN911.2[电子电信—通信与信息系统]