New blind adaptive approach to multiuser detection in CDMA systems  

作　　者：LüPingbao XieJianying 

机构地区：[1]SchoolofElectronicsandInformation,ShanghaiJiaotongUniversity,Shanghai200030,P.R.China

出　　处：《Journal of Systems Engineering and Electronics》2004年第2期131-134,146,共5页系统工程与电子技术（英文版）

摘　　要：Due to a number of advantages, blind adaptive multiuser detector has become a research hotspot in recent years. But low convergence rate problem occurs to many blind adaptive algorithms. A new blind adaptive approach to multiuser detection is presented. The simulation results show that by reasonably choosing time varying step size, the proposed detector can not only improve the convergence rate, but also reduce the bit error rate (BER) of the system, and so it can effectively improve the system performance with less computational cost.Due to a number of advantages, blind adaptive multiuser detector has become a research hotspot in recent years. But low convergence rate problem occurs to many blind adaptive algorithms. A new blind adaptive approach to multiuser detection is presented. The simulation results show that by reasonably choosing time varying step size, the proposed detector can not only improve the convergence rate, but also reduce the bit error rate (BER) of the system, and so it can effectively improve the system performance with less computational cost.

关 键 词：CDMA multiuser detector blind adaptive bit error rate convergence rate. 

分 类 号：TN929.533[电子电信—通信与信息系统]