Blind equalization of quadrature partial response-trellis coded modulated signals in Rician fading

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Cirpan H., Ucan O.

INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS, vol.19, no.2, pp.159-168, 2001 (SCI-Expanded)

• Publication Type: Article / Article
• Volume: 19 Issue: 2
• Publication Date: 2001
• Doi Number: 10.1002/sat.678
• Journal Name: INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS
• Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Page Numbers: pp.159-168
• Istanbul University Affiliated: No

Abstract

In this paper, a blind maximum-likelihood channel estimation algorithm is developed for quadrature partial response-trellis coded modulated (QPR-TCM) signals propagating through a Rician fading environment. A hidden Markov model (HMM) formulation of the problem is introduced and the Baum-Welch parameter estimation algorithm is modified to provide a computationally efficient solution to the resulting optimization problem. Performance analysis of the proposed method is carried out through the evaluation of bit-error probability upper bound for Rician fading channels. Also, some illustrative simulations are presented. Copyright (C) 2001 John Wiley & Sons, Ltd.