MIMO信道中衰落信号的多谱勒功率谱  

Doppler power spectrum of fading signals in MIMO channels

作　　者：汪洋[1] 葛临东[1] 

机构地区：[1]信息工程大学信息工程学院,郑州450002

出　　处：《计算机应用》2007年第8期1846-1848,1851,共4页journal of Computer Applications

基　　金：国防预研究项目资助(6130320)

摘　　要：MIMO系统中的角度功率谱有多种分布形式,所以经典多普勒功率谱不再适用。针对常用的均匀分布、余弦分布、高斯分布和拉氏分布的入射波角度功率谱,分别推导了多谱勒功率谱解析式。通过仿真比较了不同角度功率谱下的多普勒功率谱,并分析各种参数对其的影响。这些工作对MIMO信道中频率扩散的刻画做了拓展。Classical Doppler Power Spectral （DPS） is not applicable because there are many kinds of distribution of Power Azimuth Spectrum （PAS） in MIMO system. Respective analytical and general expressions were derived according to different commonly-used PASs of uniform, cosine, Gaussian and Laplacian distribution. DPSs of different PAS were compared by simulation, and then the effects of various parameters were analyzed. These extend the research of representation of frequency scattering in MIMO channel.

关 键 词：MIMO 多径衰落 多谱勒功率谱 角度功率谱 

分 类 号：TN92[电子电信—通信与信息系统]