多径信道中基于发射波束高斯编码的性能研究  

On the Performance of Rayleigh Fading Channel Based on STBC Beams

作　　者：李平安[1] 张晶[1] 

机构地区：[1]武汉理工大学信息工程学院,湖北武汉430070

出　　处：《武汉理工大学学报（信息与管理工程版）》2008年第1期1-5,共5页Journal of Wuhan University of Technology：Information & Management Engineering

基　　金：湖北省自然科学基金资助项目(2005ABA224)

摘　　要：研究了空时分组码与传统的波束赋形结合在平坦瑞利单径信道及多径衰落信道下的发射分集的性能,并在多径衰落信道下提出了一种新的实现空时译码的方案。基于八元均匀线阵,对于不同信道情况下的基于波束的发射分集性能进行了数字仿真计算和分析。仿真结果表明,基于波束的空时分组码发射分集技术,对空时衰落信道环境下移动终端的接收性能以及整个无线通信系统的容量都具有良好的改善作用。The performance of transmit diversity in the flat Rayleigh single - path channel and multi - path fading channel by the combination of STBC and traditional beamforming was investigated, and a new scheme of relizing space and time decoding was proposed in the muhipath fading channel. By 8 - ary uniform linear arrays the performance of transmit diversity based on beams in the channel above were conducted to simulate and analyze. The results of simulation indicate that the receiving performance of mobile terminal and the capacity of whole wireless communications system are greatly improved by the technique of STBC and transmit diversity based on beams in the space -time fading channel.

关 键 词：空时分组码 波束赋形 角度比较 多径衰落 

分 类 号：TN929.5[电子电信—通信与信息系统]