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A Novel Efficient Cluster-Based MLSE Equalizer for Satellite Communication Channels with-QAM Signaling

EURASIP Journal on Advances in Signal Processing volume 2006, Article number: 034343 (2006) Cite this article

Abstract

In satellites, nonlinear amplifiers used near saturation severely distort the transmitted signal and cause difficulties in its reception. Nevertheless, the nonlinearities introduced by memoryless bandpass amplifiers preserve the symmetries of the-ary quadrature amplitude modulation (-QAM) constellation. In this paper, a cluster-based sequence equalizer (CBSE) that takes advantage of these symmetries is presented. The proposed equalizer exhibits enhanced performance compared to other techniques, including the conventional linear transversal equalizer, Volterra equalizers, and RBF network equalizers. Moreover, this gain in performance is obtained at a substantially lower computational cost.

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Authors and Affiliations

  1. Department of Statistics and Insurance Science, University of Piraeus, 80 Karaoli & Dimitriou Street, Piraeus, 185 34, Greece

    Eleftherios Kofidis

  2. Department of Informatics and Telecommunications, University of Athens, Panepistimioupolis, Ilissia, Athens, 157 84, Greece

    Vassilis Dalakas & Sergios Theodoridis

  3. Institute for Digital Communications, School of Engineering and Electronics, the University of Edinburgh, Kings Buildings, Mayfield Road, Edinburgh, EH9 3JL, United Kingdom

    Yannis Kopsinis

Authors
  1. Eleftherios Kofidis
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  2. Vassilis Dalakas
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  3. Yannis Kopsinis
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  4. Sergios Theodoridis
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Correspondence to Eleftherios Kofidis.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License ( https://creativecommons.org/licenses/by/2.0 ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Kofidis, E., Dalakas, V., Kopsinis, Y. et al. A Novel Efficient Cluster-Based MLSE Equalizer for Satellite Communication Channels with-QAM Signaling. EURASIP J. Adv. Signal Process. 2006, 034343 (2006). https://doi.org/10.1155/ASP/2006/34343

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  • DOI: https://doi.org/10.1155/ASP/2006/34343

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