A predictive constant modulus algorithm for blind equalization in QAM systems

This paper presents a new blind equalization technique based on a predictive filter structure with infinite impulse response (IIR). The resulting technique is an evolution of former proposals where only finite-impulse response (FIR) predictors were used. The proposed structure is optimized with the...

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Bibliographic Details
Main Authors: Cavalcanti, F.R.P., Mota, J.C.M.
Format: Conference Proceeding
Language:English
Subjects:
Blind equalizers
Computational complexity
Finite impulse response filter
IIR filters
Prediction algorithms
Proposals
Quadrature amplitude modulation
Robustness
Transfer functions
Transversal filters
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Summary:This paper presents a new blind equalization technique based on a predictive filter structure with infinite impulse response (IIR). The resulting technique is an evolution of former proposals where only finite-impulse response (FIR) predictors were used. The proposed structure is optimized with the constant modulus criterion resulting in a technique robust to phase errors. The predictive constant modulus algorithm (PCMA) offers low computational complexity and excellent performance in radio channels with high degree of dispersion. Simulations results also show that stability is verified in practical situations.
DOI:10.1109/ICC.1997.610051