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A Recursive Blind Adaptive Equalizer for IIR Channels with Common Zeros

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Abstract

This paper considers the problem of blind adaptive equalization of infinite impulse response (IIR) channels without requiring the channel diversity condition. That is, the subchannels in the fractionally sampled model can have common factors. We analyze the case of two parallel channels, and develop an equalizer based on IIR prediction of the received signal. The predictor parameters are estimated by using the recursive extended least squares (RELS) algorithm. It is proved that with probability one the adaptive equalizer is globally stable, the parameter estimates are consistent, and the prediction error converges toward a scalar multiple of the input symbol sequence.

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Authors and Affiliations

  1. Department of Electrical Engineering, University of Colorado Denver, Denver, CO, 80217-3364, USA

    Miloje S. Radenkovic

  2. Bradley Dept. of Electrical and Computer Engineering, Virginia Tech, 435 Durham, MS 350, Blacksburg, VA, 24061, USA

    Tamal Bose

Authors
  1. Miloje S. Radenkovic
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  2. Tamal Bose
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Correspondence to Tamal Bose.

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Radenkovic, M.S., Bose, T. A Recursive Blind Adaptive Equalizer for IIR Channels with Common Zeros. Circuits Syst Signal Process 28, 467–486 (2009). https://doi.org/10.1007/s00034-008-9095-y

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  • DOI: https://doi.org/10.1007/s00034-008-9095-y

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