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Low-complexity opti...
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Wolkerstorfer, MartinFTW Telecommunications Research Center Vienna, Vienna, Austria
(författare)
Low-complexity optimal discrete-rate spectrum balancing in digital subscriber lines
- Artikel/kapitelEngelska2013
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Amsterdam :Elsevier,2013
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Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:kth-104773
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-104773URI
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https://doi.org/10.1016/j.sigpro.2012.06.007DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-19498URI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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QC 20121203
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Discrete-rate spectrum balancing in interference-limited multi-user and multi-carrier digital subscriber lines (DSL) is a large-scale, non-convex and combinatorial problem. Previously proposed algorithms for its (dual) optimal solution are only applicable for networks with few users, while the suboptimality of less complex bit-loading algorithms has not been adequately studied so far. We deploy constrained optimization techniques as well as problem-specific branch-and-bound and search-space reduction methods, which for the first time give a low-complexity guarantee of optimality in certain multi-user DSL networks of practical size. Simulation results precisely quantify the suboptimality of multi-user bit-loading schemes in a thousand ADSL2 scenarios under measured channel data.
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Jaldén, Joakim,1976-KTH,Signalbehandling,ACCESS Linnaeus Centre,KTH, Stockholm, Sverige,ACCESS Linnaeus Center, Signal Processing Lab(Swepub:kth)u16uao7t
(författare)
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Nordström, Tomas,1963-Högskolan i Halmstad,Centrum för forskning om inbyggda system (CERES)(Swepub:hh)tomnor
(författare)
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FTW Telecommunications Research Center Vienna, Vienna, AustriaSignalbehandling
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Signal ProcessingAmsterdam : Elsevier93:1, s. 23-340165-16841872-7557
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