Power adaptation for cognitive radio systems under an average sinr loss constraint in the absence of path loss information

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buir.contributor.authorGezici, Sinan
dc.citation.epage172en_US
dc.citation.issueNumber1en_US
dc.citation.spage151en_US
dc.citation.volumeNumber77en_US
dc.contributor.authorDulek, B.en_US
dc.contributor.authorGezici, Sinanen_US
dc.contributor.authorSawai, R.en_US
dc.contributor.authorKimura, R.en_US
dc.date.accessioned2016-02-08T11:02:24Z
dc.date.available2016-02-08T11:02:24Z
dc.date.issued2014en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.description.abstractAn upper bound is derived on the capacity of a cognitive radio system by considering the effects of path loss and log-normal shadowing simultaneously for a single-cell network. Assuming that the cognitive radio is informed only of the shadow fading between the secondary (cognitive) transmitter and primary receiver, the capacity is achieved via the water-filling power allocation strategy under an average primary signal to secondary interference plus noise ratio loss constraint. Contrary to the perfect channel state information requirement at the secondary system (SS), the transmit power control of the SS is accomplished in the absence of any path loss estimates. For this purpose, a method for estimating the instantaneous value of the shadow fading is also presented. A detailed analysis of the proposed power adaptation strategy is conducted through various numerical simulations.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T11:02:24Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2014en
dc.identifier.doi10.1007/s11277-013-1499-8en_US
dc.identifier.issn0929-6212
dc.identifier.urihttp://hdl.handle.net/11693/26615
dc.language.isoEnglishen_US
dc.publisherKluwer Academic Publishersen_US
dc.relation.isversionofhttp://dx.doi.org/10.1007/s11277-013-1499-8en_US
dc.source.titleWireless Personal Communicationsen_US
dc.subjectCapacityen_US
dc.subjectCognitive radioen_US
dc.subjectPath lossen_US
dc.subjectPower controlen_US
dc.subjectShadowingen_US
dc.subjectWater-fillingen_US
dc.subjectCognitive radioen_US
dc.subjectCommunication channels (information theory)en_US
dc.subjectPower controlen_US
dc.subjectCapacityen_US
dc.subjectPath lossen_US
dc.subjectPerfect channel state informationen_US
dc.subjectSecondary interferenceen_US
dc.subjectShadowingen_US
dc.subjectTransmit power controlen_US
dc.subjectWater-filling power allocationsen_US
dc.subjectWaterfillingen_US
dc.subjectRadio systemsen_US
dc.titlePower adaptation for cognitive radio systems under an average sinr loss constraint in the absence of path loss informationen_US
dc.typeArticleen_US

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