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Performance Analysis of Iterative Channel Estimation and Multiuser Detection in Multipath DS-CDMA Channels

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3 Author(s)
Husheng Li ; Qualcomm Inc., San Diego, CA ; Betz, S.M. ; Poor, H.V.

This paper examines the performance of decision-feedback-based iterative channel estimation and multiuser detection in channel coded aperiodic direct sequence code division multiple-access systems operating over multipath fading channels. First, explicit expressions describing the performance of channel estimation and parallel interference-cancellation-based multiuser detection are developed. These results are then combined to characterize the evolution of the performance of a system that iterates among channel estimation, multiuser detection and channel decoding. Sufficient conditions for convergence of this system to a unique fixed point are developed

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Signal Processing, IEEE Transactions on  (Volume:55 ,  Issue: 5 )