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Low-complexity opti...
Low-complexity optimal discrete-rate spectrum balancing in digital subscriber lines
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- Wolkerstorfer, Martin (författare)
- FTW Telecommunications Research Center Vienna, Vienna, Austria
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- Jaldén, Joakim, 1976- (författare)
- KTH,Signalbehandling,ACCESS Linnaeus Centre,KTH, Stockholm, Sverige,ACCESS Linnaeus Center, Signal Processing Lab
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- Nordström, Tomas, 1963- (författare)
- Högskolan i Halmstad,Centrum för forskning om inbyggda system (CERES)
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(creator_code:org_t)
- Amsterdam : Elsevier, 2013
- 2013
- Engelska.
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Ingår i: Signal Processing. - Amsterdam : Elsevier. - 0165-1684 .- 1872-7557. ; 93:1, s. 23-34
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
Nyckelord
- Power control
- DSL
- Interference channel
- Combinatorial search
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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