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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.accessioned2016-11-09T17:20:26Z
dc.date.available2016-11-09T17:20:26Z
dc.date.issued2015
dc.identifier.isbn978-1-4673-6432-4
dc.identifier.isbn978-1-4673-6430-0
dc.identifier.otherCSD2008-00010es_ES
dc.identifier.otherTEC2013-47141-C4-3-Res_ES
dc.identifier.urihttp://hdl.handle.net/10902/9515
dc.description.abstractIn this paper, the impact of improper Gaussian signaling is studied for an underlay cognitive radio (CR) scenario comprised of a primary user (PU), which has a rate constraint, and a secondary user (SU), both single-antenna. We first derive expressions for the achievable rate of the SU when it transmits proper and maximally improper Gaussian signals (assuming that the SU is solely limited by the CR constraint). These expressions depend on the channel gains to and from the SU through a single variable. Thereby, we observe that improper signaling is beneficial whenever the SU rate is below a threshold, which depends on the signal-to-noise ratio (SNR) and rate requirement of the PU. Furthermore, we provide bounds on the achievable gain that also depend only on the PU parameters. Then, the achievable rate is studied from a statistical viewpoint by deriving its cumulative distribution function considering a constant received SNR at the PU. In addition, we specialize this expression for the Z interference channel, for which the expected achievable rate is also derived. Numerical examples illustrate our claims and show that the SU may significantly benefit from using improper signaling.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”. Peter 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.extent6 p.es_ES
dc.language.isoenges_ES
dc.publisherIEEEes_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 International Conference on Communications (ICC), London, 2015, 1398-1403es_ES
dc.subject.otherCognitive radioes_ES
dc.subject.otherInterference channeles_ES
dc.subject.otherImproper signalinges_ES
dc.subject.otherAsymmetric complex signalinges_ES
dc.titleAnalysis of maximally improper signaling schemes for underlay cognitive radio networkses_ES
dc.typeinfo:eu-repo/semantics/conferenceObjectes_ES
dc.relation.publisherVersionhttps://doi.org/10.1109/ICC.2015.7248519es_ES
dc.rights.accessRightsopenAccesses_ES
dc.identifier.DOI10.1109/ICC.2015.7248519
dc.type.versionacceptedVersiones_ES


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