Change search
ReferencesLink to record
Permanent link

Direct link
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 (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.
, IFAC Proceedings Volumes (IFAC-PapersOnline), ISSN 1474-6670
Keyword [en]
Cdma, Non-convex optimization, Outage, Radio power control
National Category
Communication Systems
URN: urn:nbn:se:kth:diva-150247DOI: 10.3182/20100913-2-FR-4014.00037ScopusID: 2-s2.0-80051932167ISBN: 978-390266182-1OAI: diva2:745246
2nd IFAC Workshop on Distributed Estimation and Control in Networked Systems, NecSys'10, 13 September 2010 through 14 September 2010, Annecy, France

QC 20140910

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

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Fischione, Carlo
By organisation
Automatic ControlACCESS Linnaeus Centre
Communication Systems

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 12 hits
ReferencesLink to record
Permanent link

Direct link