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

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2 Author(s)
Zhiwei Mao ; Dept. of Electr. Eng., Lakehead Univ., Thunder Bay, Ont., Canada ; Bhargava, V.K.

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.

Published in:

Wireless Communications, IEEE Transactions on  (Volume:4 ,  Issue: 4 )

Date of Publication:

July 2005

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