AN APPROXIMATED EXPRESSION FOR THE CONVERGENCE TIME OF ADAPTIVE BLIND EQUALIZERS

Monika Pinchas

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Paper

AN APPROXIMATED EXPRESSION FOR THE CONVERGENCE TIME OF ADAPTIVE BLIND EQUALIZERS

Topics: Adaptive Signal Processing and Control; Nonlinear Signals and Systems

In Proceedings of the 8th International Conference on Informatics in Control, Automation and Robotics - Volume 2: ICINCO, 411-414, 2011 , Noordwijkerhout, Netherlands

Author: Monika Pinchas

Affiliation: Ariel University Center, Israel

Keyword(s): Blind deconvolution, Blind equalization, Acquisition time.

Related Ontology Subjects/Areas/Topics: Adaptive Signal Processing and Control ; Informatics in Control, Automation and Robotics ; Nonlinear Signals and Systems ; Signal Processing, Sensors, Systems Modeling and Control

Abstract: In this paper, closed-form approximated expressions are proposed for the convergence time (or number of iterations required for convergence) and for the Intersymbol Interference (ISI) as a function of time valid during the stages of the iterative deconvolution process. The new derivations are valid for the noiseless, real and two independent quadrature carrier case and for type of blind equalizers where the error that is fed into the adaptive mechanism which updates the equalizer’s taps can be expressed as a polynomial function of order three of the equalized output like in Godard’s algorithm. Up to now, the equalizer’s performance (convergence time and ISI as a function of time) could be obtained only via simulation when the channel coefficients were known. The new proposed expressions are based on the knowledge of the initial ISI and channel power (which is measurable) and eliminate the need to carry out any more the above mentioned simulation.

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Paper citation in several formats:

Pinchas, M. (2011). AN APPROXIMATED EXPRESSION FOR THE CONVERGENCE TIME OF ADAPTIVE BLIND EQUALIZERS. In Proceedings of the 8th International Conference on Informatics in Control, Automation and Robotics - Volume 2: ICINCO; ISBN 978-989-8425-74-4; ISSN 2184-2809, SciTePress, pages 411-414. DOI: 10.5220/0003529204110414

@conference{icinco11,
author={Monika Pinchas.},
title={AN APPROXIMATED EXPRESSION FOR THE CONVERGENCE TIME OF ADAPTIVE BLIND EQUALIZERS},
booktitle={Proceedings of the 8th International Conference on Informatics in Control, Automation and Robotics - Volume 2: ICINCO},
year={2011},
pages={411-414},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003529204110414},
isbn={978-989-8425-74-4},
issn={2184-2809},
}

TY - CONF

JO - Proceedings of the 8th International Conference on Informatics in Control, Automation and Robotics - Volume 2: ICINCO
TI - AN APPROXIMATED EXPRESSION FOR THE CONVERGENCE TIME OF ADAPTIVE BLIND EQUALIZERS
SN - 978-989-8425-74-4
IS - 2184-2809
AU - Pinchas, M.
PY - 2011
SP - 411
EP - 414
DO - 10.5220/0003529204110414
PB - SciTePress