Adaptive semi-blind linear parallel interference cancellation multiuser detection for DS-CDMA systems

TitleAdaptive semi-blind linear parallel interference cancellation multiuser detection for DS-CDMA systems
Publication TypeConference Paper
Year of Publication2004
AuthorsMao, Z., and V. K. Bhargava
Conference NameGlobal Telecommunications Conference, 2004. GLOBECOM '04. IEEE
Pagination2813 - 2817 Vol.5
Date Publishednov.
Keywordsadaptive semi-blind PIC detectors, adaptive signal detection, base station receiver cell user signal information, CDMA system reverse link, cellular radio, code division multiple access, DS-CDMA systems, interference suppression, linear multiuser detection, multiple-cell CDMA system, multiuser detection, parallel interference cancellation, processing latency reduction, spread spectrum communication, time-varying CDMA system, time-varying channels

Semi-blind multiuser detection for the reverse link of a multi-cell code-division multiple-access (CDMA) system is considered. In such a system, although active users are present in the home cell and neighbouring cells, the base station receiver only knows the signal information of the users in its own cell. Three new adaptive semi-blind linear multiuser detectors are proposed, based on a parallel interference cancellation approach. Compared with some known semi-blind 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 show that the detection performance of the proposed detectors is superior to that of some existing semi-blind multiuser detectors.


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