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Interference Temperature based Frequency Sharing Scheme for Multiple Cognitive Radio Users  

Kim, Seung-Wang (Department of Information, Communications & Electronics Engineering, The Catholic University of Korea)
Kim, Hye-Ryeong (Department of Information, Communications & Electronics Engineering, The Catholic University of Korea)
Choe, Sang-Ho (Department of Information, Communications & Electronics Engineering, The Catholic University of Korea)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.46, no.12, 2009 , pp. 72-81 More about this Journal
Abstract
In this paper, we investigate a spectrum sharing scheme based on the interference temperature (IT), that is a recently introduced receiver-centric metric by FCC. We extend the existing frequency sharing procedure for single CR to the one for multiple CRs (or secondary users, SUs). In the proposed interference model, we consider the practical operating characteristics of primary users (PUs), stochastically activated (ON)/deactivated (OFF) at the time axis, and analyze quantitatively the CR user capacity based on the model. We define the instantaneous capacity for idle time-slot channel allocation and the mean capacity averaging this instantaneous capacity and use them for a proper frequency sharing. Apart from existing schemes, the proposed frequency sharing scheme changes the frequency parameters adaptively depending on the channel characteristics and does not need any sensing information from PUs. Through computer simulation, we verify the proposed model.
Keywords
cognitive radio (CR);
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Times Cited By KSCI : 1  (Citation Analysis)
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