The LSCM_SUB algorithm for blind multiuser detection in multipath CDMA channels  

作　　者：LIU Sheng-mei FENG Guang-zeng ZHU Qi 

机构地区：[1]Mobile Communications Laboratory, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2006年第3期16-19,共4页中国邮电高校学报（英文版）

基　　金：This work was supported by National Natural Science Foundation of China(60472104);scientific start-up research foundation of NJUPT(NY205054);Nature Science Foundation of University in Jiangsu province(04KJB510094).

摘　　要：In this article, the least square constant modulus algorithm （LSCMA） is combined with the subspace approach and a LSCM_SUB （Subspace） blind adaptive multiuser detection in multipath code division multiple access （CDMA） channels is presented. The poor performance of LSCMA in the low signal to noise ratio （SNR） is improved by the LSCM_SUB algorithm. The performance of the proposed LSCM_SUB algorithm is compared with that of LSCMA. Simulation results show that the LSCM_SUB algorithm is superior to the LSCMA, especially in the low SNR.In this article, the least square constant modulus algorithm （LSCMA） is combined with the subspace approach and a LSCM_SUB （Subspace） blind adaptive multiuser detection in multipath code division multiple access （CDMA） channels is presented. The poor performance of LSCMA in the low signal to noise ratio （SNR） is improved by the LSCM_SUB algorithm. The performance of the proposed LSCM_SUB algorithm is compared with that of LSCMA. Simulation results show that the LSCM_SUB algorithm is superior to the LSCMA, especially in the low SNR.

关 键 词：LSCMA LSCM_SUB multiuser detection CDMA multipath 

分 类 号：TN914.53[电子电信—通信与信息系统]