室内MIMO系统采用极化分集时的信道容量  

Capacity of indoor MIMO wireless system in the presence of polarization diversity

作　　者：黄丘林[1] 史小卫[1] 

机构地区：[1]西安电子科技大学天线与微波技术国家重点实验室,陕西西安710071

出　　处：《电路与系统学报》2007年第2期106-109,共4页Journal of Circuits and Systems

摘　　要：典型的室内传播信道为莱斯衰落信道,可将其分解为LOS传播信道和散射信道。本文假设散射信道为瑞利衰落信道,并根据天线的极化特性,给出了存在极化分集时的LOS传播信道。基于此,本文提出了室内MIMO系统采用极化分集时的信道模型。研究表明:极化分集可以有效提高MIMO信道容量。Typical indoor wireless channel is Ricean fading, and can be decomposed into the sum of an LOS propagation channel and a scattering channel. A rayleigh assumption is made for the scattering channel, and the LOS propagation channel model in the presence of polarization diversity is derived. Following above, the MIMO channel is proposed when polarization diversity is present. It is shown that polarization diversity can increase MIMO channel capacity efficiently.

关 键 词：多输入多输出 信道容量 极化分集 莱斯信道 

分 类 号：TN919.72[电子电信—通信与信息系统]