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Optimal power allocation under QoS constraints in cognitive radio systems

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dc.contributor.author Vassaki, S en
dc.contributor.author Poulakis, M en
dc.contributor.author Panagopoulos, AD en
dc.contributor.author Constantinou, P en
dc.date.accessioned 2014-03-01T02:53:24Z
dc.date.available 2014-03-01T02:53:24Z
dc.date.issued 2011 en
dc.identifier.issn 21540217 en
dc.identifier.uri http://hdl.handle.net/123456789/36295
dc.subject.other Cognitive radio en
dc.subject.other Cognitive radio technologies en
dc.subject.other Effective capacity en
dc.subject.other Fading environment en
dc.subject.other Optimal allocation en
dc.subject.other Optimal power allocation en
dc.subject.other Power allocations en
dc.subject.other QoS constraints en
dc.subject.other Radio resources en
dc.subject.other Spectrum usage en
dc.subject.other Global system for mobile communications en
dc.subject.other Optimization en
dc.subject.other Quality of service en
dc.subject.other Radio systems en
dc.title Optimal power allocation under QoS constraints in cognitive radio systems en
heal.type conferenceItem en
heal.identifier.primary 10.1109/ISWCS.2011.6125418 en
heal.identifier.secondary http://dx.doi.org/10.1109/ISWCS.2011.6125418 en
heal.identifier.secondary 6125418 en
heal.publicationDate 2011 en
heal.abstract Cognitive radio technology aims at the efficient utilization of the limited radio resources and the improvement of flexibility of spectrum usage in wireless networks. The main idea of this technology is the development of intelligent networks where the unlicensed secondary users may coexist with the licensed primary users, always limited by the obligation not to affect their communication. In this paper, we consider a spectrum underlay cognitive radio system operating in fading environment. Guaranteeing that the average interference limit constraint to primary users is satisfied, we propose a quality of service (QoS)-driven power allocation scheme, with a view to maximizing the effective capacity of the secondary users. The proposed scheme takes into consideration the interference of primary user to the secondary user, in order to accomplish the optimal allocation more realistically. Finally, the proposed allocation scheme has been evaluated through numerical simulations that confirm the presented theoretical analysis. © 2011 IEEE. en
heal.journalName Proceedings of the International Symposium on Wireless Communication Systems en
dc.identifier.doi 10.1109/ISWCS.2011.6125418 en
dc.identifier.spage 552 en
dc.identifier.epage 556 en


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