An efficient blind multiuser detector for DS-CDMA systems

被引：0
|
作者：
Li, Z [1 ]
Ye, G [1 ]
Bi, G [1 ]
Yang, C [1 ]
机构：
[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore, Singapore
来源：
GLOBECOM '00: IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1- 3 | 2000年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, an efficient blind adaptive multiuser detector based on the modified RLS algorithm is proposed for synchronous DS-CDMA systems over a flat fading channel with large spreading sequences. We first properly decompose the optimal weight vector associated with the original code of the desired user into several adaptive weight subvectors. A modified adaptive algorithm based on the conventional RLS algorithm is derived to update the weight subvectors. Simulation results show that the proposed detector achieves better performance than the adaptive detector using conventional RLS algorithm especially for DS-CDMA systems with large processing gains. In addition, it is computationally efficient and robust against the near-far problem.
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页码：11 / 14
页数：4
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