NDLI: Simultaneous multichannel time domain equalizer design based on the maximum composite shortening SNR

Content Provider	IEEE Xplore Digital Library
Author	Milosevic, M. Pessoa, L.F.C. Evans, B.L.
Copyright Year	2002
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA (Milosevic, M.)
Abstract	A time domain equalizer (TEQ) is a finite impulse response filter that shortens the channel impulse response (CIR) to mitigate intersymbol interference (ISI). P. Melsa et al. (see IEEE Trans. on Commun., vol.44, p.1662-72, 1996) minimized ISI in the time domain by maximizing the shortening signal-to-noise ratio (SSNR) of the energy in a target window to the energy outside the target window in the shortened CIR. Infinite SSNR means zero ISI. Melsa et al. also developed a joint channel shortening method to design a single TEQ to shorten a channel and a near-end echo impulse response. We extend the joint SSNR method to design a single TEQ to shorten multiple channels by maximizing the composite SSNR. The composite SSNR is a weighted sum of normalized channel SSNRs. The normalized SSNR is the ratio of the energy in the target window samples to the energy of all samples in the shortened CIR and has a range of [0, 1] so that it is better suited for numerical stability and fixed-point implementation. Our proposed method outperforms the joint channel shortening method. because it achieves higher weighted sum of SSNRs of the used channels.
Starting Page	1895
Ending Page	1899
File Size	375141
Page Count	5
File Format	PDF
ISBN	0780375769
ISSN	10586393
DOI	10.1109/ACSSC.2002.1197109
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-11-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Equalizers OFDM modulation Intersymbol interference Finite impulse response filter Signal to noise ratio Design methodology Fast Fourier transforms Digital video broadcasting Numerical stability Bandwidth
Content Type	Text
Resource Type	Article
Subject	Signal Processing Computer Networks and Communications

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