Title: Combined RLS-LMS initialization for per tone equalizers in DMT-receivers
Authors: Ysebaert, Geert ×
Vanbleu, Koen
Cuypers, Gert
Moonen, Marc
Pollet, T #
Issue Date: Jul-2003
Publisher: Ieee-inst electrical electronics engineers inc
Series Title: IEEE Transactions on signal processing vol:51 issue:7 pages:1916-1927
Abstract: In discrete multitone receivers, the classical equalizer structure consists of a (real) time domain equalizer (TEQ) combined with complex one-tap frequency domain equalizers. An alternative receiver is based on a per tone equalization (PTEQ), which optimizes the signal-to-noise ratio (SNR) on each tone separately and, hence, the total bitrate. In this paper, a new initialization scheme for the PTEQ is introduced, based on a combination of least mean squares (LMS) and recursive least squares (RLS) adaptive filtering. It will be shown that the proposed method has only slightly slower convergence than full square-root RLS (SR-RLS) while complexity as well as memory cost are reduced considerably. Hence, in terms of complexity and convergence speed, the proposed algorithm is in between LMS and RLS.
ISSN: 1053-587X
Publication status: published
KU Leuven publication type: IT
Appears in Collections:ESAT - STADIUS, Stadius Centre for Dynamical Systems, Signal Processing and Data Analytics
Electrical Engineering - miscellaneous
Study Advisory Centre (-)
Faculty of Engineering Science - miscellaneous
× corresponding author
# (joint) last author

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