微小区中电波传播信道的相关性分析  

Analysis of correlation for radio transmitting channel in microcellular

作　　者：魏旻[1] 龚耀寰[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：《电波科学学报》2006年第1期64-69,共6页Chinese Journal of Radio Science

基　　金：国家高技术研究发展计划(863计划)资助项目(2002AA123032);自然科学基(No.60496313)资助

摘　　要：为了能在极度复杂的无线环境中充分发挥MIMO系统的优越性,需分析无线传播环境对系统的影响,特别是在MIMO系统中,信道的相关性会对系统尤其是系统容量造成很大的影响。基于通用的微小区信道椭圆模型,通过几何方法,得到了微小区中信道间相关系数的封闭解表达式,通过仿真说明了在微小区中相关系数与发射、接收端天线阵阵元间距之间的关系,为在MIMO中消除相关性的影响提供了有效的工具。To make use of the MIMO system in the most complicated wireless environment, the effect of the wireless environment, especially the effect of correlation between the channels on the capacity of the system has to be analyzed. This paper derives the close-form expression of the correlation coefficient in the microcellular, based on the general microcellular model. The effect of the distance between the antenna elements on the correlation coefficient is also considered. The result presented may be a useful reference for eliminating the effect of the correlation on MIMO system.

关 键 词：MIMO 相关 容量 微小区 

分 类 号：TN911.6[电子电信—通信与信息系统]