室内室外统计信道模型下的TOA分布研究
摘要
多输入多输出(MIMO)技术被认为是现代通信技术中的重大突破之一,越来越成为无线通信领域的研究热点。针对于指向性天线以及室内室外特殊环境所造成的空时多径衰落信道,本文通过假设散射体服从高斯(Gaussian)分布,指数(Exponential)分布以及瑞利(Rayleigh)分布的情况下,分别导出室内室外模型下基站BS和移动台MS的时延特性TOA(Time of Arriva)l。数值结果与多径衰落信道圆模型GBSBM(geometrically based single bounce mode)l对比表明本模型的信道参数估计结果符合理论和经验,扩展了空时统计系统模型的研究和应用,对评估多天线MIMO系统空时处理算法和仿真无线通信系统提供有力的工具。
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