Semiblind linear parallel interference cancellation multiuser detectors for DS-CDMA systems

TitleSemiblind linear parallel interference cancellation multiuser detectors for DS-CDMA systems
Publication TypeJournal Article
Year of Publication2005
AuthorsMao, Z., and V. K. Bhargava
JournalWireless Communications, IEEE Transactions on
Volume4
Pagination1319 - 1324
Date Publishedjul.
ISSN1536-1276
Keywordsbase station receiver, channel coding, code division multiple access, DS-CDMA system, interference suppression, multicell code-division multiple-access system, multiuser detection, radio links, radio receivers, reverse link, semiblind linear parallel interference cancellation multiuser detector, spread spectrum communication, subspace tracking, time-varying CDMA system, time-varying channels
Abstract

Semiblind multiuser detection for the reverse link of a multicell code-division multiple-access (CDMA) system is considered. In such a system, although active users are present in the home cell and neighboring cells, the base station receiver only knows the signature information of the users in its own cell. Three new semiblind linear multiuser detectors are proposed based on parallel interference cancellation approach. Compared with some known semiblind detectors, the proposed detectors share a rather simple implementation structure and involve reduced latency for processing, which are of particular importance in a time-varying CDMA system. Numerical results are presented to compare the detection performance of the proposed detectors with that of some existing semiblind multiuser detectors.

URLhttp://dx.doi.org/10.1109/TWC.2005.850363
DOI10.1109/TWC.2005.850363

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