A modified blind equalization technique based on a constant modulus algorithm

Improved blind equalisation techniques based on a modified constant modulus algorithm (CMA) are proposed. This algorithm can not only accomplish blind equalization and carrier phase recovery simultaneously, but also choose a nonlinear gain with a least-squares algorithm to avoid the gradient noise a...

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Bibliographic Details
Published in1998 IEEE International Conference on Communications Vol. 1; pp. 344 - 348 vol.1
Main Authors Jia-Chin Lin, Lin-Shan Lee
Format Conference Proceeding
LanguageEnglish
Published IEEE 1998
Subjects
Algorithm design and analysis
Blind equalizers
Computer errors
Computer simulation
Convergence
Decision feedback equalizers
Intersymbol interference
Noise robustness
Phase noise
Robust stability
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Summary:Improved blind equalisation techniques based on a modified constant modulus algorithm (CMA) are proposed. This algorithm can not only accomplish blind equalization and carrier phase recovery simultaneously, but also choose a nonlinear gain with a least-squares algorithm to avoid the gradient noise amplification problem and achieve improved stability and robustness without increasing the computation complexity. It can be switched over to a decision-directed equalization scheme once the error level is reasonably low to obtain higher convergence speed and lower residual intersymbol interference as well. Extensive computer simulation results have verified the analysis and indicated the very attractive behavior of the proposed algorithm.
ISBN:0780347889
9780780347885
DOI:10.1109/ICC.1998.682867