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A generalized utility maximization problem with outage constraints in CDMA networks
KTH, School of Electrical Engineering (EES), Automatic Control. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0001-9810-3478
2010 (English)In: 2nd IFAC Workshop on Distributed Estimation and Control in Networked Systems, IFAC Papers Online, 2010, 133-138 p.Conference paper, Published paper (Refereed)
Abstract [en]

The problem of maximizing a utility function while limiting the outage probability below an appropriate threshold is investigated. A coded-division multi access wireless network under mixed Nakagami-lognormal fading is considered. Solving such a utility maximization problem is difficult because the problem is non-convex and non-geometric with mixed integer and real decision variables and no explicit functions of the constraints are available. In this paper, two methods to the solution of the utility maximization problem are proposed. By the first method, a simple explicit outage approximation is used and the constraint that rates are integers is relaxed yielding a standard convex programming optimization that can be solved quickly but at the price of a reduced accuracy. The second method uses a more accurate outage approximation, which allows one solving the utility maximization problem by the Lagrange duality for non-convex problems and contraction mapping theory. Numerical results show that the first method performs well for average values of the outage requirements, whereas the second one is always more accurate, but is also more computationally expensive.

Place, publisher, year, edition, pages
IFAC Papers Online, 2010. 133-138 p.
Series
IFAC Proceedings Volumes (IFAC-PapersOnline), ISSN 1474-6670
Keyword [en]
Cdma, Non-convex optimization, Outage, Radio power control
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:kth:diva-150247DOI: 10.3182/20100913-2-FR-4014.00037Scopus ID: 2-s2.0-80051932167ISBN: 978-390266182-1 (print)OAI: oai:DiVA.org:kth-150247DiVA: diva2:745246
Conference
2nd IFAC Workshop on Distributed Estimation and Control in Networked Systems, NecSys'10, 13 September 2010 through 14 September 2010, Annecy, France
Note

QC 20140910

Available from: 2014-09-10 Created: 2014-09-01 Last updated: 2014-09-10Bibliographically approved

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Fischione, Carlo

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CiteExportLink to record
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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
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