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

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.