A PDA-Kalman approach to multiuser detection in asynchronous CDMA

被引：17
|
作者：
Pham, D [1 ]
Luo, J [1 ]
Pattipati, K [1 ]
Willett, P [1 ]
机构：
[1] Univ Connecticut, Dept Elect & Comp Engn, Storrs, CT 06269 USA
来源：
IEEE COMMUNICATIONS LETTERS | 2002年 / 6卷 / 11期
关键词：
code-division multiple access; filtering; multiuser detection; probabilistic data association;
D O I：
10.1109/LCOMM.2002.805524
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
The Probabilistic Data Association (PDA) method for multiuser detection in synchronous code-division multiple-access (CDMA) communication channels is extended to asynchronous CDMA, where a Kalman filter or smoother is employed to track the correlated noise arising from the outputs of a decorrelator. The estimates from the tracker, coupled with an iterative PDA, result in impressively low bit error rates. Computer simulations show that the new scheme significantly outperforms the best decision feedback detector. The algorithm has O(K-3) complexity per time frame, where K is the number of users.
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页码：475 / 477
页数：3
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