Title :
Optimal linear space-time multiuser detector for asynchronous DS-CDMA system
Author :
Wenjie Wang ; Feng, Aigung ; Yin, Qinye
Author_Institution :
Inst. of Inf. Eng., Xi´´an Jiaotong Univ., China
Abstract :
A versatile signal model suitable for all linear multiuser detectors is proposed. Based on the model, a versatile linear space-time multiuser detector for asynchronous DS-CDMA system is presented and its optimal solution according to the linear constrained minimum variance (LCMV) criterion is deduced. The analyses of existing linear multiuser detectors demonstrate that these methods are just the special cases of the versatile detector in this paper. Their interference canceling performance is inferior to the proposed optimal detector
Keywords :
code division multiple access; interference suppression; space-time adaptive processing; spread spectrum communication; asynchronous DS-CDMA system; interference canceling performance; linear constrained minimum variance criterion; optimal linear space-time multiuser detector; signal model; Additive noise; Antenna arrays; Decorrelation; Detectors; Error probability; Interference cancellation; Maximum likelihood detection; Multiaccess communication; Multiple access interference; Vectors;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921016
