Opportunistic spectrum access in cognitive radio based on channel switching

Fakhreddine Gaaloul, Hongchuan Yang, Redha Mahmoud Mesleh Radaydeh, Mohamed-Slim Alouini

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

3 Scopus citations


This paper investigates the performance of a cognitive radio transceiver that can monitor multiple channels and opportunistically use any one of them should it be available. In our work, we propose and compare two different opportunistic channel access schemes. The first scheme applies when the secondary user (SU) has access to only one channel. The second scheme applies when the SU has access to multiple channels but can at a given time monitor and access only one channel. Two switching strategies, namely the switch and examine and the switch and stay strategies, are proposed. For these proposed access schemes, we investigate their performance by deriving the analytical expression of the novel metric of the average access duration and the average waiting time and based on these two metrics a time average SU throughput formula is proposed to predict the performance of the secondary cognitive system. © 2012 ICST.
Original languageEnglish (US)
Title of host publicationProceedings of the 7th International Conference on Cognitive Radio Oriented Wireless Networks
PublisherEuropean Alliance for Innovation n.o.
Number of pages5
ISBN (Print)9781936968558
StatePublished - 2012

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01


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