相关Rician衰落信道下紧凑MIMO系统的容量分析  

Capacity analysis of compact MIMO systems in correlated Rician fading channels

作　　者：郭强[1] 周希朗[1] 张唯炯[1] 

机构地区：[1]上海交通大学电子工程系,上海200240

出　　处：《信息技术》2009年第10期20-23,共4页Information Technology

基　　金：国家自然科学基金资助项目(60572156)

摘　　要：研究了Rician衰落信道下采用紧凑型双偶极子阵列的MIMO系统容量,建立了相关Rician衰落信道下紧凑MIMO系统的模型,深入分析了天线互耦、空间相关性、功率分配方案以及信道衰落环境对信道容量的影响。数值结果表明天线间距较小时,互耦和相关性会导致信道容量的损失,而在某些情况下互耦和相关性的影响会使信道容量有所增加。This paper investigated the capacity of a MIMO system with closely coupled two-dipole array over Rician fading channels. A compact MIMO system model in correlated Rician fading channels is built. Effects of antenna mutual coupling, spatial correlation, power allocation scheme as well as channel fading environment on the channel capacity are thoroughly analyzed. Numerical results show that mutual coupling and correlation lead to capacity loss when the antenna spacing is small, while in some situations mutual coupling and correlation may increase the channel capacity.

关 键 词：多输入多输出 Rician衰落 空间相关 互耦 容量 

分 类 号：TN929.5[电子电信—通信与信息系统]