Title :
Performance Analysis of Iterative Channel Estimation and Multiuser Detection in Multipath DS-CDMA Channels
Author :
Li, Husheng ; Betz, Sharon M. ; Poor, H. Vincent
Author_Institution :
Qualcomm Inc., San Diego, CA
fDate :
5/1/2007 12:00:00 AM
Abstract :
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
Keywords :
3G mobile communication; channel coding; channel estimation; code division multiple access; fading channels; interference suppression; iterative decoding; multipath channels; multiuser detection; radiofrequency interference; spread spectrum communication; aperiodic direct sequence code division multiple-access systems; channel coding; channel decoding; decision-feedback-based estimation; iterative channel estimation; multipath DS-CDMA channels; multipath fading channels; multiuser detection; parallel interference-cancellation; Channel estimation; Detectors; Fading; Interference cancellation; Iterative decoding; Maximum likelihood decoding; Multiaccess communication; Multiple access interference; Multiuser detection; Performance analysis; CDMA; channel estimation; decision feedback; multiuser detection;
Journal_Title :
Signal Processing, IEEE Transactions on
DOI :
10.1109/TSP.2007.893229
