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Comparative Simulation Study of Fast Heuristics for Power Control in Copper Broadband Networks
FTW Telecommunications Research Center Vienna, Vienna, Austria.
Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES). FTW Telecommunications Research Center Vienna, Vienna, Austria.ORCID iD: 0000-0002-0562-2082
2014 (English)In: Signal Processing, ISSN 0165-1684, E-ISSN 1872-7557, Vol. 104, no November 2014, p. 437-449Article in journal (Refereed) Published
Abstract [en]

The data-rate in currently deployed multi-carrier digital subscriber line (DSL) communication systems is limited by the interference among copper lines. This interference can be alleviated by multi-user transmit power allocation. Problem decomposition results in a large number of per-subcarrier problems. Our objective is to solve these nonconvex integer per-subcarrier power control problems at low complexity. For this purpose we develop ten combinatorial heuristics and test them by simulation under a small complexity budget in scenarios with tens of DSL users, where optimal solutions are currently intractable. Simulation results lead us to the conclusion that simple randomized greedy heuristics extended by a specific local search perform well despite the stringent complexity restriction. This has implications on multi-user discrete resource allocation algorithms, as these can be designed to jointly optimize transmit power among users even in large-scale scenarios.

Place, publisher, year, edition, pages
Amsterdam: Elsevier, 2014. Vol. 104, no November 2014, p. 437-449
Keywords [en]
Digital subscriber lines, Power control, Meta-heuristics
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:hh:diva-25251DOI: 10.1016/j.sigpro.2014.05.004ISI: 000338392500045Scopus ID: 2-s2.0-84901856222OAI: oai:DiVA.org:hh-25251DiVA, id: diva2:715126
Available from: 2014-04-30 Created: 2014-04-30 Last updated: 2017-12-05Bibliographically approved

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Nordström, Tomas

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf