Modeling and Optimization of Line-Driver Power Consumption in xDSL Systems
2012 (English)In: EURASIP Journal on Advances in Signal Processing, ISSN 1687-6172, E-ISSN 1687-6180, Vol. 2012, no Article number 226Article in journal (Refereed) Published
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, thispaper presents realistic line driver (LD) power consumption models. These are applicable to any DSL system andextend previous models by parameterizing various circuit-level non-idealities. Based on the model of a class-ABLD 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 besimplified 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 comparedto static spectrum management.
Place, publisher, year, edition, pages
Heidelberg: Springer, 2012. Vol. 2012, no Article number 226
Digital subscriber lines, Energy-efficient, Line driver, Optimization
IdentifiersURN: urn:nbn:se:hh:diva-19500DOI: 10.1186/1687-6180-2012-226ISI: 000316082800001ScopusID: 2-s2.0-84887069619OAI: oai:DiVA.org:hh-19500DiVA: diva2:550319