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Semiblind Bussgang Equalization for Sparse Channels

In this correspondence, we describe a semiblind Bussgang equalization scheme that incorporates the training sequence in a quite direct and flexible fashion. Among others, we discuss how the training sequence can be used to control the Bussgang nonlinearity thus enforcing the convergence of the itera...

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Published in:	IEEE transactions on signal processing 2009-12, Vol.57 (12), p.4946-4952
Main Authors:	Colonnese, S., Panci, G., Rinauro, S., Scarano, G.
Format:	Article
Language:	English
Subjects:	Applied sciences Bandwidth Blind equalizers Blinds Bussgang equalization Channels Convergence Design engineering Detection, estimation, filtering, equalization, prediction Equalization Equalizers Exact sciences and technology Fading Impulse response Information, signal and communications theory Intersymbol interference Iterative algorithms Miscellaneous Mobile communication Performance analysis semiblind channel equalization Signal and communications theory Signal processing Signal processing algorithms Signal, noise sparse channels Statistics Telecommunications and information theory Training
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creator	Colonnese, S. Panci, G. Rinauro, S. Scarano, G.
description	In this correspondence, we describe a semiblind Bussgang equalization scheme that incorporates the training sequence in a quite direct and flexible fashion. Among others, we discuss how the training sequence can be used to control the Bussgang nonlinearity thus enforcing the convergence of the iterative equalizer design. Moreover, we focus on the case of channels whose impulse response is long but sparse, counteracted by equalizers designed on a suitable sparse support. Numerical performance analysis conducted on compact and sparse time-varying channels shows that sparse Bussgang semiblind equalizer using a short training sequence outperforms blind, trained, and decision directed equalizers in a variety of fading conditions.
doi_str_mv	10.1109/TSP.2009.2026112
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subjects	Applied sciences Bandwidth Blind equalizers Blinds Bussgang equalization Channels Convergence Design engineering Detection, estimation, filtering, equalization, prediction Equalization Equalizers Exact sciences and technology Fading Impulse response Information, signal and communications theory Intersymbol interference Iterative algorithms Miscellaneous Mobile communication Performance analysis semiblind channel equalization Signal and communications theory Signal processing Signal processing algorithms Signal, noise sparse channels Statistics Telecommunications and information theory Training
title	Semiblind Bussgang Equalization for Sparse Channels
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