NDLI: A group oriented multiuser detection with beamforming for multicarrier CDMA systems

Content Provider	IEEE Xplore Digital Library
Author	Junqiang Li Letaief, K.B. Zhigang Cao
Copyright Year	2001
Description	Author affiliation: Dept. of Electron. Eng., Tsinghua Univ., Beijing, China (Junqiang Li)
Abstract	The capacity of MC-CDMA communication systems can be significantly enhanced by employing multiuser detection (MUD) techniques. A group oriented MUD based on the combination of smart antennas and multiuser or joint detection is presented. The proposed method is featured as a novel technique for further increasing the system capacity and performance. In this method, all the users are first divided into several groups according to their impinging direction of arrivals (DOA). All users with similar DOAs are classified into the same group and then MUD is employed in each group in parallel. Because spatial filtering cannot suppress all the interference between the groups, interference cancellation among groups is used prior to MUD within the groups. It is shown that the proposed group oriented MUD algorithm can significantly reduce the computational complexity and processing time delay compared with the conventional MUD schemes. Furthermore, it is demonstrated that significant performance improvement can be achieved.
Starting Page	733
Ending Page	737
File Size	1096822
Page Count	5
File Format	PDF
ISBN	0780372069
DOI	10.1109/GLOCOM.2001.965515
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-11-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multiuser detection Array signal processing Multiaccess communication Multicarrier code division multiple access Filtering Interference cancellation Antenna arrays Computational complexity Information technology Multiple access interference
Content Type	Text
Resource Type	Article

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