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Data detection and disjoint channel estimation over asynchronous CDMA flat Rayleigh fading channels

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4 Author(s)
Pham, D. ; Dept. of Electr. & Comput. Eng., Connecticut Univ., Storrs, CT, USA ; Pattipati, K. ; Willett, P. ; Luo, J.

Motivated by the work of Wu and Duel-Hallen (1996) for synchronous code-division multiple access (CDMA) systems, this paper develops a scheme for combined data detection and channel estimation over asynchronous CDMA flat Rayleigh fading channels. The scheme combines the effective probabilistic data association approach for multiuser detection (MUD) with simple, disjoint, decision-directed Kalman channel estimators. Computer simulations show that the strategy is effective in tracking the channel and offers low bit-error rates (BER) for differentially encoded data.

Published in:

Signal Processing Advances in Wireless Communications, 2003. SPAWC 2003. 4th IEEE Workshop on

Date of Conference:

15-18 June 2003