室外3D散射信道中ULA/UCA天线MIMO性能分析  

An analysis of Doppler shift and MIMO performance in a brief 3-D geometric channel model

作　　者：姚颖莉[1] 周杰[1,2] 王益[1] 刘鹏[1] 

机构地区：[1]南京信息工程大学气象探测与信息处理重点实验室,江苏南京210044 [2]日本国立新泻大学工学部电气电子工学科

出　　处：《电子技术应用》2016年第7期87-90,94,共5页Application of Electronic Technique

基　　金：国家自然科学基金面上项目(61372128);江苏省科技支撑计划(工业)项目(BE2011195)

摘　　要：为更好地解决室外三维(3D)空间域的移动通信问题,提出了一种新型室外3D空间域散射信道统计模型,主要研究MIMO多天线系统的接收性能。在宏蜂窝小区移动通信环境中,模型能够估计多径衰落信道的重要空间信道参数,首先推导了多径衰落信道的到达角(Angle of Arrival,AOA)概率密度分布。此外模型在设置多输入多输出(Multiple Input Multiple Output,MIMO)多天线的均匀线性阵列(Uniform Linear Array,ULA)和圆形阵列(Uniform Circular Array,UCA)的基础上,分析了波达信号不同方位角分布对散射信道中MIMO性能的影响因素,包括MIMO空间相关性、信道容量以及天线阵列配置。数值仿真结果与3D多径衰落信道模型对比,表明本模型的信道参数估计符合理论和实际的通信环境,为评估MIMO天线接收系统与仿真无线通信系统提供了创新性的研究。In multi-path environments,in order to solve the problem of mobile communication in the three-dimensional space,this paper presents a new statistical model of the 3D spatial domain,which mainly studies the performance of the MIMO multi antenna system.In macrocell mobile communication environment,the model is able to estimate the multipath fading channel of important space channel parameters,the multipath fading channel of AOA probability density distribution are derived.In addition,the channel MIMO performance influencing factors is analyzed,including MIMO spatial correlation,channel capacity and antenna array configura-tion.The results of numerical simulation are compared with 3D multipath fading channel model,which shows that the channel parameters of the model estimated are in line with the theory and the actual communication environment,and it provides innovative research to evaluate the MIMO antenna receiving system and simulation of wireless communication system.

关 键 词：统计信道模型 多径衰落 到达角 MIMO 信道容量 

分 类 号：TN911.6[电子电信—通信与信息系统]