A dual-mode technique for improved blind equalization for QAM signals
- 19 February 2003
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Signal Processing Letters
- Vol. 10 (2) , 29-31
- https://doi.org/10.1109/lsp.2002.806699
Abstract
A dual-mode blind equalization technique for adaptive channel equalization of quadrature amplitude modulation signals is introduced. The equalizer uses the constant modulus algorithm (CMA) in the initial phase and then switches to a proposed constellation-matched error (CME) minimization algorithm at appropriate values of the mean-square error. The proposed CME cost function can be constructed using finite- or infinite-order polynomials with desirable properties over the constellation region. This dual-mode equalization technique is applied to a linear equalizer and is shown to provide superior performance or simplicity over the conventional CMA and some other dual-mode schemes.Keywords
This publication has 7 references indexed in Scilit:
- A blind equalizer allowing soft transition between the constant modulus and the decision-directed algorithm for PSK modulated signalsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Blind equalization using cost function matched to the signal constellationPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Adaptive equalization techniques for indoor dynamic wireless communication channelsPublished by SPIE-Intl Soc Optical Eng ,2001
- Blind equalization using the constant modulus criterion: a reviewProceedings of the IEEE, 1998
- Practical blind demodulators for high-order QAM signalsProceedings of the IEEE, 1998
- A blind equalizer for nonstationary discrete-valued signalsIEEE Transactions on Signal Processing, 1997
- Comparative performance study of several blind equalization algorithmsPublished by SPIE-Intl Soc Optical Eng ,1991