Modeling and optimization of the line-driver power consumption in xDSL systemsReportar como inadecuado

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EURASIP Journal on Advances in Signal Processing

, 2012:226

First Online: 25 October 2012Received: 16 February 2012Accepted: 30 August 2012


Optimization of the power spectrum alleviates the crosstalk noise in digital subscriber lines DSL and thereby reduces their power consumption at present. In order to truly assess the DSL system power consumption, this article presents realistic line driver LD power consumption models. These are applicable to any DSL system and extend previous models by parameterizing various circuit-level non-idealities. Based on the model of a class-AB LD we analyze the multi-user power spectrum optimization problem and propose novel algorithms for its global or approximate solution. The thereby obtained simulation results support our claim that this problem can be simplified with negligible performance loss by neglecting the LD model. This motivates the usage of established spectral optimization algorithms, which are shown to significantly reduce the LD power consumption compared to static spectrum management.

KeywordsDigital subscriber lines Energy-efficient Line driver Optimization Electronic supplementary materialThe online version of this article doi:10.1186-1687-6180-2012-226 contains supplementary material, which is available to authorized users.

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Autor: Martin Wolkerstorfer - Steffen Trautmann - Tomas Nordström - Bakti D Putra


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