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dc.contributor.authorLameiro Gutiérrez, Christian 
dc.contributor.authorSantamaría Caballero, Luis Ignacio 
dc.contributor.authorSchreier, Peter J.
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.date.accessioned2016-11-09T17:03:30Z
dc.date.available2016-11-09T17:03:30Z
dc.date.issued2015-02
dc.identifier.issn2162-2337
dc.identifier.issn2162-2345
dc.identifier.otherCSD2008-00010es_ES
dc.identifier.otherTEC2013-47141-C4-3-Res_ES
dc.identifier.urihttp://hdl.handle.net/10902/9510
dc.description.abstractIn this letter we study the potential benefits of improper signaling for a secondary user (SU) in underlay cognitive radio networks. We consider a basic yet illustrative scenario in which the primary user (PU) always transmit proper Gaussian signals and has a minimum rate constraint. After parameterizing the SU transmit signal in terms of its power and circularity coefficient (which measures the degree of impropriety), we prove that the SU improves its rate by transmitting improper signals only when the ratio of the squared modulus between the SU-PU interference link and the SU direct link exceeds a given threshold. As a by-product of this analysis, we obtain the optimal circularity coefficient that must be used by the SU depending on its power budget. Some simulation results show that the SU benefits from the transmission of improper signals especially when the PU is not highly loaded.es_ES
dc.description.sponsorshipC. Lameiro and I. Santamaría have received funding from the Spanish Government (MICINN) under projects CONSOLIDER-INGENIO 2010 CSD2008-00010 (COMONSENS), TEC2013-47141-C4-3-R (RACHEL) and FPU Grant AP2010-2189; and also from the Deutscher Akademischer Austauschdienst (DAAD) under its programm ”Research grants for doctoral candidates and young academics and scientists”. P. Schreier receives financial support from the Alfried Krupp von Bohlen und Halbach foundation, under its program ”Return of German scientists from abroad”.es_ES
dc.format.extent4 p.es_ES
dc.language.isoenges_ES
dc.publisherInstitute of Electrical and Electronics Engineers, Inc.es_ES
dc.rights© 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.es_ES
dc.sourceIEEE Wireless Communications Letters, 2015, 4(1), 22 - 25es_ES
dc.subject.otherCognitive radioes_ES
dc.subject.otherInterference channeles_ES
dc.subject.otherImproper signalinges_ES
dc.subject.otherAsymmetric complex signalinges_ES
dc.titleBenefits of improper signaling for underlay cognitive radioes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherVersionhttps://doi.org/10.1109/LWC.2014.2360179es_ES
dc.rights.accessRightsopenAccesses_ES
dc.identifier.DOI10.1109/LWC.2014.2360179
dc.type.versionacceptedVersiones_ES


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