一种改进的椭圆散射空-时无线信道模型  

An Enhanced Elliptical Scattering Model for Space-Time Wireless Channels

作　　者：罗飞[1] 杜明辉[1] 

机构地区：[1]华南理工大学电子与信息学院,广东广州510640

出　　处：《电子学报》2006年第12期2200-2203,共4页Acta Electronica Sinica

摘　　要：空-时无线信道模型的建立是研究无线信道空-时特性的关键,然而广泛使用的基于散射体分布的单反射椭圆模型(GBSBEM)在描述TOA(Time-Of-Arrival)分布方面存在局限性.本文在GBSBEM的基础上引入了“有效散射体”和“反射概率”两个有明确物理意义的概念,给出一种改进的椭圆散射空-时无线信道模型,并推导TOA和AOA(Az-imuth-Of-Arrival)的联合分布和各自的边缘分布表达式.分析表明该模型不仅能有效克服GBSBEM的局限性,并且具有适用范围广泛的特点.Spatial-temporal modeling of radio channels is the key for space-time wireless channel study. The widely used geornetrically based single bounce elliptical model（GBSBEM）has the limitations in the description of Time-Of-Artival（TOA）. By introducing two physical concepts of effective scatterer and reflecting probability to GBSBEM, an enhanced elliptical scattering model is presented, while the probability density functions of TOA and Angle-Of-Arrival（AOA） are also derived. The detailed analysis proves that the enhanced model not only overcomes the limitations of GBSBEM, but also has an advantage of broad application extent.

关 键 词：无线传播 空-时信道模型 单反射椭圆模型 到达时间 到达角度 

分 类 号：TN011[电子电信—物理电子学]