摘要
提出了一种采用卡尔曼滤波估计平坦瑞利衰落信道的方法，并结合解相关检测、两级干扰抵消检测和判决反馈检测３种多用户检测的同步ＣＤＭＡ系统分析了其性能．计算机仿真结果表明，在低信噪比的情况下，两级干扰抵消和判决反馈检测的性能好于解相关检测；在高信噪比时，两级干扰抵消和判决反馈检测反而不如解相关检测．
A new method which use the Kalman filter as the Rayleigh flat fading channel estimator is presented, and the performance analyses of decorrelator,two stage detector and decision feedback detector with the channel estimator are conducted. The simulated results show the performance of two stage detector and decision feedback detector is better than that of decorrelator in low SNR region, but for high SNR,the former have higher bit error rate.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
1999年第2期81-84,共4页
Journal of Beijing University of Posts and Telecommunications
基金
国家自然科学基金
关键词
码分多址联接
多用户检测
信道估计
code division multiple access
multiuser detection
channel estimation
