空时分组码的多径译码方法  

Multipath Space-Time Block Decoding Method in CDMA System

作　　者：徐利再[1] 沈薇薇[1] 王宗欣[1] 

机构地区：[1]复旦大学通信科学与工程系,上海200433

出　　处：《信息与电子工程》2005年第4期261-265,共5页information and electronic engineering

基　　金：国家自然科学基金资助项目(60272033)

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。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.

关 键 词：通信技术 译码 空时分组码 多径 多输入单输出 信道估计 

分 类 号：TN911.22[电子电信—通信与信息系统]