Title :
Blind Crosstalk Channel Identification in DMT-Based DSL Systems
Author :
Al Amayreh, Ahmad ; Le Masson, Jérôme ; Hélard, Maryline
Author_Institution :
Orange Labs., Lannion
Abstract :
This paper describes a blind crosstalk channel identification method and its application to discrete multitone (DMT)-based digital subscriber line (DSL) systems. Cyclostationarity inherited in these systems is exploited to isolate effects of different sources, which allows separate selection and identification of crosstalk channels. Second-order statistics-based source separation is performed by controlling part of the cyclic-extension in the transmitted DMT block. The minimum changes required by this method facilitate its implementation in current DSL systems. All mentioned theoretical derivations are illustrated by numerical results obtained with measured DSL channels.
Keywords :
blind source separation; crosstalk; digital subscriber lines; statistics; telephone interference; blind crosstalk channel identification; digital subscriber line; discrete multitone; second-order statistics; source separation; Channel estimation; Crosstalk; DSL; Frequency estimation; Matching pursuit algorithms; OFDM modulation; Pursuit algorithms; Signal processing; Source separation; Throughput;
Conference_Titel :
Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
Conference_Location :
New Orleans, LO
Print_ISBN :
978-1-4244-2324-8
DOI :
10.1109/GLOCOM.2008.ECP.683
