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Blind equalization for asynchronous multirate DS/CDMA systems multipath with multiple antennas

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3 Author(s)
Chong-Yung Chi ; Inst. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan ; Chun-Hsien Peng ; Chun-Wei Lin

This work proposes a blind multiuser equalization algorithm (BMEA) for multirate (variable processing gain or multicode) DS/CDMA systems in multipath which is an extension of the single-rate BMEA using cumulant based inverse filter criteria (IFC) proposed by Chi et al., by converting real multirate users into single-rate (i.e., same spreading factor) virtual users. The proposed multirate BMEA also share the merit of super-exponential convergence rate of Chi et al., single-rate BMEA. Furthermore, the proposed multirate BMEA in conjunction with Chi et al., blind maximum ratio combining (BMRC) algorithm, called multirate BMEA-BMRC algorithm, is proposed for the DS/CDMA system with multiple receive antennas. Finally, some simulation results are presented to support the efficacy of the proposed multirate BMEA and multirate BMEA-BMRC algorithm.

Published in:

Signal Processing Advances in Wireless Communications, 2004 IEEE 5th Workshop on

Date of Conference:

11-14 July 2004

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