Open Access

Optimal Channel Selection for Spectrum-Agile Low-Power Wireless Packet Switched Networks in Unlicensed Band

EURASIP Journal on Wireless Communications and Networking20082008:896420

DOI: 10.1155/2008/896420

Received: 1 June 2007

Accepted: 2 March 2008

Published: 11 March 2008


This paper addresses the problem of optimal channel selection for spectrum-agile low-powered wireless networks in unlicensed bands. The channel selection problem is formulated as a multiarmed bandit problem enabling us to derive the optimal selection rules. The model assumptions about the interfering traffic that motivates this formulation are also validated through 802.11 traffic measurements as an example of a packet switched network. Finally, the performance of the optimal dynamic channel selection is investigated through simulation. The simulation results show that the proposed algorithm consistently tracks the best channel compared to other heuristic schemes.

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Authors’ Affiliations

Department of Electrical Engineering, Stanford University, University of California at Berkeley and National Semiconductor


© A. Motamedi and A. Bahai. 2008

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.