Performance analysis of the signal-to-noise ratio assisted crosstalk channel estimation for DSL systems

M. Guenach*, J. Louveaux, L. Vandendorpe, P. Whiting, J. Maes, M. Peeters

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

3 Citations (Scopus)

Abstract

In this paper we investigate the tracking performance of the downstream (DS) crosstalk (XT) channel estimation based on the reported signal to noise ratio (SNR), in particular for digital subscriber line (DSL) systems. Aiming to its simplicity, the SNR-assisted XT estimation, has been recognized in ITU as a backward compatible method that does not require any change in the very high speed digital subscriber line 2 (VDSL2) standard. This low complex algorithm can be used for XT channel estimation in dynamic spectrum management (DSM) techniques today. The algorithm as proposed recently, relies on sending perturbing signals on the victim lines (VLs) and reporting the SNRs by those lines to acquire the crosstalk channel from some disturber line (DL) to the VLs. We generalize this concept to include full startup, tracking and joining scenarios as well as the impact of different perturbation signal choices. Simulation results reveal that starting from no crosstalk precompensation, and updating a precoder matrix based on the DS crosstalk channel estimates, the far-end crosstalk (FEXT) free SNR can be reached in few iterations (36 SNR measurements for the four lines case).

Original languageEnglish
Title of host publication2009 IEEE International Conference on Communications
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1-5
Number of pages5
ISBN (Electronic)9781424434350
ISBN (Print)9781424434343
DOIs
Publication statusPublished - Jun 2009
Externally publishedYes
Event2009 IEEE International Conference on Communications, ICC - 2009 - Dresden, Germany
Duration: 14 Jun 200918 Jun 2009

Other

Other2009 IEEE International Conference on Communications, ICC - 2009
CountryGermany
CityDresden
Period14/06/0918/06/09

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