Feedback control for channel allocation in multimedia wireless system

P. Komolkiti, X. H. Liu, C. C. Lee, A. H. Haddad, M. Needham, S. Gilbert

Research output: Contribution to journalArticlepeer-review

Abstract

This paper considers an optimal control approach to the channel allocation problem in a multimedia wireless system. The system accommodates several sources with variable bit rates (VBR). The channel allocation paradigm is based on the queue length of the data of the various sources. The objective is to maintain the queue lengths of all the sources and the overall queue length at or near desired levels thus minimizing delays and avoiding data losses while maximizing bandwidth utilization. Since the system equations for the queue lengths are linear, a quadratic performance index can be utilized for the solution of the control problem, even though the uncertainties may not be Gaussian. The performance of the system is also considered in the case when the allowable source rates are discrete, and in the presence of control delay. The results are compared with simulations to indicate the improved performance of the system.

Original languageEnglish (US)
Pages (from-to)2794-2798
Number of pages5
JournalProceedings of the American Control Conference
Volume4
DOIs
StatePublished - 2000

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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