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

Volume

55

Issue

5

fYear

2007

fDate

5/1/2007 12:00:00 AM

Firstpage

1981

Lastpage

1993

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;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/TSP.2007.893229

Filename

4156392