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Throughput Analysis of the Intermittent DCF for Opportunistic Spectrum Access

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dc.contributor.author Adamis, AV en
dc.contributor.author Maliatsos, K en
dc.contributor.author Cambourakis, G en
dc.contributor.author Constantinou, P en
dc.date.accessioned 2014-03-01T11:46:22Z
dc.date.available 2014-03-01T11:46:22Z
dc.date.issued 2009 en
dc.identifier.issn 09296212 en
dc.identifier.uri http://hdl.handle.net/123456789/37855
dc.subject DCF en
dc.subject Markov model en
dc.subject Opportunistic spectrum access en
dc.title Throughput Analysis of the Intermittent DCF for Opportunistic Spectrum Access en
heal.type other en
heal.identifier.primary 10.1007/s11277-009-9817-x en
heal.identifier.secondary http://dx.doi.org/10.1007/s11277-009-9817-x en
heal.publicationDate 2009 en
heal.abstract Recently, the opportunistic spectrum access (OSA) technologies have drawn a lot of the research community attention, because, by utilizing cognitive radio (CR) capabilities, they provide us with solutions to compensate for the spectrum underutilization. The MAC design is an important aspect of this on-going research. In this paper we study the performance of the distributed coordination function (DCF) in the OSA environment, which requires periodic intermissions to the MAC operation for spectrum scan procedures and opportunities identification. We present several modifications to the DCF that render it robust and operational in demanding environments of frequent spectrum scan procedures and low achievable transmission rates. We also present an analytical model for the throughput calculation of the resulted Intermittent DCF, which is based on the Bianchi's Markov model and extends it so as to include the intermittent nature of the OSA environment. The proposed model is validated through simulations. A new parameter, controllable by the CR terminals, is used to optimize the throughput performance in realistic OSA scenarios. Using the presented analytical model we evaluate the performance of the Intermittent DCF under the effect of certain design parameters. © 2009 Springer Science+Business Media, LLC. en
heal.journalName Wireless Personal Communications en
dc.identifier.doi 10.1007/s11277-009-9817-x en
dc.identifier.spage 1 en
dc.identifier.epage 29 en


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