Title: Constraints in channel shortening equalizer design for DMT-based systems
Authors: Ysebaert, Geert ×
Van Acker, Katleen
Moonen, Marc
De Moor, Bart #
Issue Date: Mar-2003
Publisher: Elsevier science bv
Series Title: Signal processing vol:83 issue:3 pages:641-648
Abstract: In discrete multitone receivers, a time domain equalizer (TEQ) is used to shorten the channel impulse response, so that the equalized channel impulse response is shorter than the inserted prefix. The aim of this paper is to show that the minimum mean square error (MMSE) channel shortening problem with two different energy constraints, remarkably, lead to the same TEQ coefficients, up to a scaling factor. Moreover, implying the two energy constraints together in the MMSE optimization again yields the same result and comes down to a canonical correlation analysis between the subspace spanned by the transmitted samples and the received samples, respectively. Hence, the TEQ obtained by these three distinct MMSE cases yields the same performance in terms of bit rate. Since the resulting problem can easily be reformulated as a maximization problem, an iterative procedure based on power iterations can be devised to reduce the computational complexity. (C) 2002 Elsevier Science B.V. All rights reserved.
ISSN: 0165-1684
Publication status: published
KU Leuven publication type: IT
Appears in Collections:ESAT - STADIUS, Stadius Centre for Dynamical Systems, Signal Processing and Data Analytics
Physiology Section (-)
Faculty of Engineering Science - miscellaneous
× corresponding author
# (joint) last author

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