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Spectrum scanning and reserve channel methods for link maintenance in cognitive radio systems

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Original languageEnglish
Title of host publicationIEEE Vehicular Technology Conference, 2008 (VTC Spring 2008), Singapore
Publisher or commissioning bodyInstitute of Electrical and Electronics Engineers (IEEE)
Pages1944 - 1948
Number of pages5
ISBN (Print)9781424416448, 15502252
StatePublished - May 2008
EventVehicular Technology Conference 2008 - Singapore, Singapore


ConferenceVehicular Technology Conference 2008
Abbreviated titleVTC 2008-Spring
Period1/05/08 → …


Underutilization of the limited spectrum sparked the need for dynamic spectrum access and flexible spectrum policies. Accurate estimation of spectrum occupancy is an essential step for spectrum access in distributed networks. This paper analyzes a bidirectional and dual scanning method that scans multiple spectrum bands to find a suitable free-channel. Moreover, secondary users' access to available spectrum could be interrupted by the arrival of primary spectrum users, forcing the well-behaved secondary users to switch to another free-channel. A pointer and adaptive reserve channel mechanism is proposed in this paper to facilitate quicker and smoother channel switching. Simulation results for both techniques show improved overall connectivity is maintained for varying primary users' arrival rates

Additional information

Name and Venue of Event: IEEE Vehicular Technology Conference, 2008 (VTC Spring 2008), Singapore Rose publication type: Conference contribution Additional information: With accompanying conference poster Sponsorship: The authors would like to thank Toshiba Research Europe Limited and EPSRC for funding this work through the Dorothy Hodgkin Postgraduate Award Terms of use: Copyright © 2008 IEEE. Reprinted from IEEE Vehicular Technology Conference, 2008 (VTC Spring 2008). This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to By choosing to view this document, you agree to all provisions of the copyright laws protecting it. ISSN: 9781424416448


Vehicular Technology Conference 2008

Abbreviated titleVTC 2008-Spring
Duration1 May 2008 → …

Event: Conference

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