A low-complexity design method for DMT time domain equalizers

Chun Fang Lee, Wen Rong Wu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The time-domain equalizer (TEQ) is a commonly used device to shorten the channel impulse response in a discrete multitone (DMT) receiver. With a capacity maximization criterion, a TEQ design method called minimum intersymbol interference (minISI) has shown to have nearly optimum performance. However, the minISI design method require high computational complexity, adversely affecting its real-world implementation. In this paper, we propose a low-complexity method to overcome this problem. The main idea is to use a subset of the subchannels, instead of all, for capacity maximization. With a simple equally-spaced sampling method, the number of subchannels required for calculation can be effectively reduced. Simulations show that the performance of the proposed algorithm is almost the same as the original minISI while its computation is dramatically reduced.

Original languageEnglish
Title of host publication2006 International Symposium on Intelligent Signal Processing and Communications, ISPACS'06
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages211-214
Number of pages4
ISBN (Print)0780397339, 9780780397330
DOIs
StatePublished - 1 Jan 2006
Event2006 International Symposium on Intelligent Signal Processing and Communications, ISPACS'06 - Yonago, Japan
Duration: 12 Dec 200615 Dec 2006

Publication series

Name2006 International Symposium on Intelligent Signal Processing and Communications, ISPACS'06

Conference

Conference2006 International Symposium on Intelligent Signal Processing and Communications, ISPACS'06
CountryJapan
CityYonago
Period12/12/0615/12/06

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