摘要
针对室外视距(LOS)传输情况下的MIMO信道,结合电磁散射分析研究了典型散射体对MIMO信道性能的影响。该模型考虑了实践中常用的微带天线,并推导出在传输路径外存在圆柱电磁散射体条件下MIMO信道矩阵的解析公式,应用该公式分析了MIMO信道容量和矩阵条件数等特征参量。仿真结果表明,该模型能够描述出不同参数下信道特性的变化,对实际MIMO系统的设计有一定的参考意义。
The effects of scattering objects on MIMO （multiple input multiple output） channel characteristics in line-ofsight （LOS） environment were investigated. The study was focused on the outdoor LOS environment but with a scatterer. The analytical mathematical expressions were derived to describe the MIMO channel matrix, where the microstrip antennas and 2-D cylindrical scatterer were considered. The MIMO channel capacity and the condition number of the matrix were investigated. From the simulation results of the MIMO channel characteristics of the model, some suggestions for practical MIMO system design are proposed.
出处
《通信学报》
EI
CSCD
北大核心
2009年第2期65-70,76,共7页
Journal on Communications
基金
国家自然科学基金资助项目(60621002)~~
关键词
多输入多输出
视距
微带天线
电磁散射
信道特性
MIMO
LOS
microstrip antenna
electromagnetic scattering
channel characteristic
