DocumentCode :
987469
Title :
Reduced-Complexity MAP-Based Iterative Multiuser Detection for Coded Multicarrier CDMA Systems
Volume :
52
Issue :
5
fYear :
2004
fDate :
5/1/2004 12:00:00 AM
Firstpage :
855
Lastpage :
855
Abstract :
Reduced-Complexity MAP-Based Iterative Multiuser Detection for Coded Multicarrier CDMA Systems In recent years, combining multiuser detection (MUD) and channel decoding has received considerable attention. The maximum a posteriori (MAP) criterion-based iterative multiuser detector greatly improves the system performance and can approach the performance of single-user coded systems. However, its complexity increases exponentially with the number of users, and can become prohibitive for systems with a medium-to-large number of users. In this paper, a reduced-complexity MAP-based iterative MUD based on the use of a soft sensitive bits algorithm is proposed for coded multicarrier code-division multiple-access systems. It is shown that it can greatly reduce the computational complexity with a minimal penalty in performance, compared with the conventional optimal scheme.
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOMM.2004.826230
Filename :
1299076
Link To Document :
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