Technical Program

Paper Detail

Paper:SPCOM-P13.4
Session:DMT and xDSL
Time:Friday, May 21, 15:30 - 17:30
Presentation: Poster
Topic: Signal Processing for Communications: Multi-Carrier, OFDM, and DMT Systems
Title: ADAPTIVE BITRATE MAXIMIZING TEQ DESIGN FOR DMT-BASED SYSTEMS
Authors: Koen Vanbleu; Katholieke Universiteit Leuven 
 Geert Ysebaert; Katholieke Universiteit Leuven 
 Gert Cuypers; Katholieke Universiteit Leuven 
Abstract: In a previous paper, we proposed a bitrate maximizing (BM) design criterion for the time-domain equalizer (TEQ) in a discrete multitone receiver. This BM-TEQ and the closely related BM per-group equalizers (PGEQ) get close to the performance of the so-called per-tone equalization (PTEQ). In this paper, we show that the BM-TEQ criterion, despite its nonlinear nature, is well suited for a recursive Levenberg-Marquardt (RLM) based design. This adaptive BM-TEQ also allows to track slow variations of transmission channel and noise. This RLM-based design uses the same second-order statistics (SOS) as the earlier presented recursive least-squares (RLS) based adaptive PTEQ and opens up a complete range of adaptive BM equalizers: from the computationally efficient RLS-based PTEQ with largest memory cost, over the RLM-based BM-PGEQ with intermediate memory cost, towards an RLM-based BM-TEQ with considerably smaller memory cost, but larger equalizer updating complexity.
 
           Back


Home -||- Organizing Committee -||- Technical Committee -||- Technical Program -||- Plenaries
Paper Submission -||- Special Sessions -||- ITT -||- Paper Review -||- Exhibits -||- Tutorials
Information -||- Registration -||- Travel Insurance -||- Housing -||- Workshops

©2015 Conference Management Services, Inc. -||- email: webmaster@icassp2004.org -||- Last updated Wednesday, April 07, 2004