Distributed power control and spreading gain allocation in CDMA data networks

Seong Jun Oh, Tava Lennon Olsen, Kimberly M. Wasserman

Research output: Contribution to journalConference article

42 Citations (Scopus)

Abstract

We study the radio resource allocation problem of distributed joint transmission power control and spreading gain allocation in a DS-CDMA mobile data network. The network consists of K base stations and M wireless data users. The data streams generated by the users are treated as best-effort traffic, in the sense that there are no pre-specified constraints on the quality of the radio channels. We are interested in designing a distributed algorithm that achieves maximal (or near-maximal in some reasonable sense) aggregate throughput, subject to peak power constraints. We provide an algorithm where base stations coordinate in a distributed fashion to control the powers and spreading gains of the users, and show that it converges to a Nash equilibrium point. In general, there may be multiple equilibrium points; however, certain structural properties of the throughput expression can be exploited to significantly trim the search space and induce an ordering on the users in each cell. The numerical results indicate that with these modifications, the algorithm frequently converges in just a few iterations to the throughput maximizing (globally optimal) power and spreading gain allocation.

Original languageEnglish
Pages (from-to)379-385
Number of pages7
JournalProceedings - IEEE INFOCOM
Volume2
Publication statusPublished - 2000
Event19th Annual Joint Conference of the IEEE Computer and Communications Societies - IEEE INFOCOM2000: 'Reaching the Promised Land of Communications' - Tel Aviv, Isr
Duration: 2000 Mar 262000 Mar 30

ASJC Scopus subject areas

  • Computer Science(all)
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Distributed power control and spreading gain allocation in CDMA data networks'. Together they form a unique fingerprint.

  • Cite this