New hybrid adaptive blind equalization algorithms for QAM signals

Authors:
Abdenour Labed;Abdeldjalil Aissa-El-Bey;Thierry Chonavel;Adel Belouchrani
Affiliations:
EMP, Computer Science Department, Algiers, Algeria;Institut TELECOM/ TELECOM Bretagne/ UMR CNRS 3192 Lab-STICC, Brest, France;Institut TELECOM/ TELECOM Bretagne/ UMR CNRS 3192 Lab-STICC, Brest, France;ENP, Electrical Engineering Department, El Harrach, Algiers, Algeria
Venue:
ICASSP '09 Proceedings of the 2009 IEEE International Conference on Acoustics, Speech and Signal Processing
Year:
2009

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A regional multimodulus algorithm for blind equalization of QAM signals: Introduction and steady-state analysis

Signal Processing

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Abstract

This paper introduces new hybrid blind equalization algorithms for QAM signals, the first term of which is the constant modulus criterion (CMA) or its extended version (ECMA) and the second are a penalty term that vanishes at constellation points coordinates. Several penalties, based on cosine, gaussian and polynomial ℓ1-norm fonctions respectively are investigated. Simulations show the effectiveness of these algorithms.