Change search
ReferencesLink to record
Permanent link

Direct link
Second-Order Power Control with Asymptotically Fast Convergence
Faculty of Computer Science Department of Information Technology University of Vaasa FIN-65101, Vaasa, FINLAND.
KTH, Superseded Departments, Signals, Sensors and Systems.
2000 (English)In: IEEE Journal on Selected Areas in Communications, ISSN 0733-8716, E-ISSN 1558-0008, Vol. 18, no 3, 447-457 p.Article in journal (Refereed) Published
Abstract [en]

This paper proposes a distributed power control algorithm that uses power levels of both current and previous iterations for power update. The algorithm is developed by applying the successive overrelaxation method to the power control problem. The gain from such a second-order algorithm is in faster convergence. Convergence analysis of the algorithm in case of feasible systems is provided in this paper. Using the distributed constrained power control (DCPC) as a reference algorithm, we carried out computational experiments on a DS-CDMA system. The results indicate that our algorithm significantly enhances the convergence speed of power control. A practical version of the proposed algorithm is provided and compared with the bang-bang type algorithm used in the IS-95 and the WCDMA systems. The results show that our algorithm also has a high potential for increasing the radio network capacity. Our analysis assumes that the system is feasible in the sense that we can support every active user by an optimal power control. When the system becomes infeasible because of high traffic load, it calls for other actions such as transmitter removal, which is beyond the scope of the present paper.

Place, publisher, year, edition, pages
New York: IEEE , 2000. Vol. 18, no 3, 447-457 p.
Keyword [en]
cellular radio system, convergence, power control, successive overrelaxation
National Category
Computer and Information Science
Research subject
URN: urn:nbn:se:kth:diva-28058DOI: 10.1109/49.840203ISI: 000086706800014OAI: diva2:383885
QC 20110111Available from: 2011-01-06 Created: 2011-01-06 Last updated: 2011-01-11Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Jäntti, RikuKim, Seong-Lyun
By organisation
Signals, Sensors and Systems
In the same journal
IEEE Journal on Selected Areas in Communications
Computer and Information Science

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: 34 hits
ReferencesLink to record
Permanent link

Direct link