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电子学报  2007 

室内环境中UWBMIMO传输下的电磁仿真

, PP. 146-151

Keywords: 超宽带,多入多出,时域射线跟踪算法

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Abstract:

构建准确有效的超宽带(UWB)信号室内多发多收(MIMO)的电波传播模型对于设计UWBMIMO系统而言非常重要.本文采用时域射线跟踪算法,根据时域几何光学理论(GO)和一致性绕射理论(UTD),编制了三维电波传播仿真程序,并利用该程序进行了室内信道的仿真,得到了以下结论:室内环境中,采用双发射天线对深衰落情况有所改善,但双发射天线引起的快衰落现象比单发射天线严重;采用多径接收的方法可以改善室内信号的接收性能;使用垂直极化发射天线时,垂直极化接收的场强较强;发射天线放置在房间中部比房间一端时的信道空间相关性低,双发射天线比单发射天线时的信道空间相关性低.

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