【摘要】 为有效地将空时分组码应用到多径衰落环境下的码分多址系统,以充分利用多个路径的信号能量,提出了一种多径环境下空时分组码译码的新方法。由于空时分组码译码与信道估计紧密相关,本文亦讨论了多径信道估计以及信道估计误差对本方法的影响。仿真结果表明,采用多路径译码方法可明显提高系统的误码率性能。更多还原

【Abstract】 For applying STBC(Space-Time Block Codes) to CDMA(Code Division Multiple Access) system in the multipath fading environment effectively,a method of multipath space-time block decoding is presented to collect the multipath signal energy adequately.Because the scheme of space-time block decoding is correlated with channel parameters,channel estimation with multipath delay is also discussed,and the deterioration of the BER(Bit Error Ratio),caused by the tolerance of channel estimation deviation,is analyzed as well.Simulation results show that the performance of BER can be improved obviously using this proposed method.更多还原