无线MIMO信道空时相关特性分析  

On the temporal and spatial correlation properties of MIMO wireless channel

作　　者：李纪[1,2] 张尔扬[2] 

机构地区：[1]总参通信工程设计研究院 [2]国防科技大学电子科学与工程学院

出　　处：《系统工程与电子技术》2006年第10期1473-1476,共4页Systems Engineering and Electronics

基　　金：国防预研基金资助课题(113030401)

摘　　要：针对无线多输入多输出(multiple-input multiple-output,MIMO)信道的空时相关特性,在经典平面波假设下,基于随机信道模型对其进行了深入分析。信道模型分别利用冯.米塞斯分布和拉普拉斯分布角度功率谱来描述移动站和基站的空间统计特性,在此条件下推导了相关系数的闭合表达式并绘制了相应曲线,分析了角度功率谱的各向异性对信道相关特性的影响。蒙特.卡洛仿真结果与理论分析的结果能够很好地吻合。To analyze the spatial and temporal correlation properties of multiple-input multiple-output（MIMO）wireless channel,a stochastic MIMO channel model is presented under the classical plane assumption. The power azimuth spectrums（PAS）of the mobile station （MS）and the base station（BS）are modeled as yon Mises distribution and Laplacian distribution respectively. Based on the model, exhaustive analysis of the spatial and temporal correlations of the MIMO wireless channel are carried out. The close-form expressions of the correlation coefficients are derived and the impacts of the anisotropy of the PAS on the correlations of the channel are also analyzed. Results of Monte-Carlo simulation show good match to theoretical values.

关 键 词：无线信道 多输入多输出 空时相关特性 角度功率谱 

分 类 号：TN929.5[电子电信—通信与信息系统]