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Theses

Augmentation des performances des systèmes DSL par allocation dynamique de spectre

Abstract : DSL systems are transmission technologies which transport important data flows on simple telephone lines. Unfortunately several distriburbing phenomena are degrading the quality of the connections. The limitations are mainly due to line attenuation and also to electromagnetic compatibility problems. In this context, this thesis work consists in increasing the performances noise margin/rate/rerach of DSL systems by Dynamic Spectrum Management (DSM). In a fisrt part are developed three methods of discrete allowance of bits between the carriers of a DSL system with DMT modulation. After this improvement of the DSL transmission technology which constitutes the level 0 of the DSM, the attenuation of the interference between the lines of the same DSL cable by coordinated allowance of spectrum (level 2of the DSM) is approched, and two processes are proposed. In a last part is considered the vectoring transmission technique which constitutes the third level of the DSM. Methods of cancellation of interference between the lines of the same DSL cable are presented and a determination model of the matrix of MIMO channel is developed
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Theses
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https://pastel.archives-ouvertes.fr/pastel-00001889
Contributor : Ecole Télécom Paristech <>
Submitted on : Tuesday, November 16, 2010 - 4:58:10 PM
Last modification on : Friday, July 31, 2020 - 10:44:05 AM
Long-term archiving on: : Thursday, December 1, 2016 - 12:41:49 PM

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  • HAL Id : pastel-00001889, version 1

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Mohamed Tlich. Augmentation des performances des systèmes DSL par allocation dynamique de spectre. domain_other. Télécom ParisTech, 2006. Français. ⟨pastel-00001889⟩

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