基于移动端多天线系统的无线衰落信道模型  

Wireless fading vector channel model for multi-antenna system at mobile terminals

作　　者：李焱[1] 张璐[1] 许家栋[1] 

机构地区：[1]西北工业大学电子工程系,陕西西安710072

出　　处：《电波科学学报》2003年第6期712-716,共5页Chinese Journal of Radio Science

摘　　要：根据当前无线移动通信对多天线移动接收端性能仿真的要求 ,讨论并建立了适于空时信号处理的移动端矢量信道模型。通过分析无线移动信道特点 ,研究了影响接收信号幅度相位的诸多因素 ,建立了相应的数学模型。并对随机参数选取进行了探讨。其中考虑到移动端接收信号到达角扩散的特点 ,采用GBSB椭圆模型产生了适于移动端接收信号仿真的随机角度 ,改进了一种瑞利衰落生成算法。最后信道的数值仿真结果符合理论和经验。同时 ,通过TD SCDMA系统链路级仿真 。To investigate the performance of Smart Antenna technology applied in mobile terminals, the simulation of multi-antenna system requires a spatial channel model, which reasonably characterizes the specific effects of wireless channel at the mobile terminals. This paper presents a space-time vector channel model fit for these demands. The important stochastic parameters of the channel, such as DOA/TOA and Rayleigh fading, are discussed with full length.The DOA of receiving signals are defined based on the GBSB elliptical model, whose assumptions are further satisfied the characteristics of the mobile terminal. At the same time the shortcoming of a generator of independent Rayleigh fading is analyzed, and an improvement is made. The final channel application data produced by this model is consistent with previous theory results. Its further application in link level simulation system also exhibits satisfied results.

关 键 词：无线移动通信 矢量信道 多径衰落 多普勒效应 JAKES模型 天线 

分 类 号：TN929.5[电子电信—通信与信息系统] TN828.6[电子电信—信息与通信工程]