室内MIMO无线信道模型和信道容量研究  

Research on Indoor MIMO Wireless Channel Models and Channel Capacity

作　　者：肖海林[1] 欧阳缮[1] 聂在平[2] 

机构地区：[1]桂林电子科技大学信息与通信学院,桂林541004 [2]电子科技大学电子工程学院,成都610054

出　　处：《电信科学》2008年第11期57-60,共4页Telecommunications Science

基　　金：国家"973"计划基金资助项目(No.2008CB317109);国家"863"计划基金资助项目(No.2002AA123032);桂林电子科技大学博士启动资金资助(No.Z20706)

摘　　要：本文从工程的实际出发,首先提出一种修正的室内MIMO无线信道模型,该模型有效地修正先前室内MIMO无线信道模型的不足,具有明显吻合室内实际通信环境的特点,然后分析天线方向性以及天线单元间的互耦对室内MIMO无线信道容量的影响。数值模拟验证了这种影响,并得到在一定条件下互耦导致的天线方向图畸变产生角度分集,提高信道容量,互耦对空域相关性无影响的条件以及室内丰富的多径使天线方向性对信道容量的影响不明显等结论。最后,实验也证实理论分析。Based on the engineering practical applications, a modified indoor multiple input multiple output （MIMO） wireless channel model is presented, which can effectively modify the deficiency of previously indoor MIMO wireless channel model in coincidence with practical communication environment. The effects of many aspects, such as antenna orientation, antenna mutual coupling on the capacity of indoor MIMO channels are investigated. The simulation results validate the effects and show the conditions that antenna mutual has no effect on the spatial correlation, under certain conditions antenna mutual has improved channel capacity, due to the distortion of radiation pattern which results in pattern diversity, and antenna directivity has no effect on channel capacity in the rich multi-path indoor environment. Finally, the theoretical analyse is confirmed by experiment.

关 键 词：多输入多输出 信道容量 空间相关性 互耦 

分 类 号：TN929.4[电子电信—通信与信息系统] TN911.22[电子电信—信息与通信工程]