Space-Time Coded Beamforming for DS CDMA Downlink  

作　　者：WANGShi-lu XUChang-jiang FENGGuang-zeng 

机构地区：[1]NanjingUniversityofPostsandTelecommunications,Nanjing21003,P.R.China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2005年第1期86-90,共5页中国邮电高校学报（英文版）

基　　金：This work is supported by Jiangsu Provincial Natural Science Research Fund of China.

摘　　要：In this paper, we analyze the scheme of Space-Time Coded BeamForming (STC-BF)for the downlink of DS-CDMA system over frequency-selective fading channels and give the numericalsimulations on the scheme. The blind multiuser detection is employed at receiver to suppress theMulti-Access Interference (MAI). The Space-Time Coding (STC) and BF are combined to mitigate theperformance degradation due to multipath fading and various interferences. The numerical simulationsshow that the BF can compensate the performance loss of STC due to the channel correlation and thenthe STC-BF can greatly improve the performance of CDMA system.In this paper, we analyze the scheme of Space-Time Coded BeamForming (STC-BF)for the downlink of DS-CDMA system over frequency-selective fading channels and give the numericalsimulations on the scheme. The blind multiuser detection is employed at receiver to suppress theMulti-Access Interference (MAI). The Space-Time Coding (STC) and BF are combined to mitigate theperformance degradation due to multipath fading and various interferences. The numerical simulationsshow that the BF can compensate the performance loss of STC due to the channel correlation and thenthe STC-BF can greatly improve the performance of CDMA system.

关 键 词：CDMA space-time coding beam forming multiuser detection transmitdiversity 

分 类 号：TN929.533[电子电信—通信与信息系统]