任意Nakagami衰落信道下2D-Rake接收机的性能分析  

Performance Analysis of 2D-Rake Receiver in a Nakagami Fading Channel with Arbitrary Parameters

作　　者：吕旌阳[1] 薛强[1] 吴伟陵 

机构地区：[1]北京邮电大学信息工程学院,北京100876

出　　处：《北京邮电大学学报》2003年第1期9-13,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金资助项目(60172051)

摘　　要：研究了单小区直扩码分多址(DS-CDMA)通信系统在任意Nakagami衰落信道下2D-Rake接收机的性能,推导出误码率的解析表示式.理论分析和数值计算结果表明,2D-Rake接收机获得了独立多径信号较大的空时分集增益,其误码率性能远优于普通的Rake或多天线接收机.系统的用户容量也有显著的提高.Based on beamforming and conventional Rake technology, 2DRake receiver is composed of antennas array, timedelay, beamforming, coherent demodulation, despread, and maximum rate combing (MRC). In Nakagami fading channel with arbitrary parameter, the bit error rate (BER) of 2DRake receiver is investigated for single cell coherent DSCDMA system. Theoretic analysis and numerical results indicate that 2DRake receiver can achieve the spacetemporal gain from independent multipath component, and its BER get an advantage over the conventional Rake receivers or the multiantenna receiver. The number of users supported by the system is also increased in a great deal.

关 键 词：Nakagami衰落信息 2D-RAKE接收机 DS-CDMA 误码率 

分 类 号：TN929.533[电子电信—通信与信息系统]