室内信道中多极化MIMO系统的容量  

Capacity of a multi-polarized MIMO system in an indoor channel

作　　者：王鹏[1] 郑剑峰[1] 高旭[1] 冯正和[1] 

机构地区：[1]清华大学微波与数字通信国家重点实验室,北京100084

出　　处：《清华大学学报（自然科学版）》2011年第7期993-998,共6页Journal of Tsinghua University(Science and Technology)

基　　金：国家"九七三"重点基础研究发展计划项目(2009CB320205);国家科技重大专项课题(2009ZX03007-003);国家"八六三"高技术项目(2009AA011503);国家自然科学基金资助项目(60771009);清华大学传信基金资助项目

摘　　要：针对室内多径信道,提出一种研究系统信道容量的方法,利用结合信道特征设计的三维多极化测量系统测量信道中多径入射信号的三维空间分布,代入天线方向图与入射信号进行空间积分计算出系统容量。利用该方法和系统对典型室内环境进行了测量,研究了真实的三极化天线组成的MIMO(multiple-input-multiple-output)系统的容量和摆放方向对多极化天线系统容量的影响。结果表明:三极化系统具有比单极化系统更优越的性能,可以利用该特性对室内环境中多极化MIMO系统的设计和布局进行优化以实现更高的系统容量。A system was developed to study the capacity of wireless systems in indoor channels using a three-dimensional multi-polarized multiple-input-multiple-output（MIMO） channel measurement system designed for indoor channels.The system was used to measure the three-dimensional spatial distribution of the incident signals and calculate the radial pattern of the antenna to get the system capacity.The measurement system was used to measure the capacity of an MIMO system with three polarizations to evaluate the influence of the multi-polarized antenna＇s direction on the capacity.The results show that for an indoor channel the three polarization system is superior to a single polarization.Thus,the system can be used to optimize the design and layout of multi-polarized MIMO systems to increase the capacity.

关 键 词：信道容量 室内信道 多入多出 极化分集 多极化 

分 类 号：TN92[电子电信—通信与信息系统]