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dc.contributor.authorFont Segura, Josep
dc.contributor.authorVázquez Grau, Gregorio
dc.contributor.authorRiba Sagarra, Jaume
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.identifier.citationFont-Segura, J.; Vazquez, G.; Riba, J. Multi-frequency GLRT spectrum sensing for wideband cognitive radio. A: IEEE International Conference on Communication (ICC). "2011 IEEE International Conference on Communications". Kyoto: IEEE Press. Institute of Electrical and Electronics Engineers, 2011, p. 1-5.
dc.description.abstractThe problem of spectrum sensing in multi-frequency cognitive radio systems is addressed. We show that as the sensed bandwidth increases, the primary user detection is governed by a low signal-to-noise ratio (low-SNR) regime. By means of low-SNR approximations, we show that the optimal generalized likelihood ratio test (GLRT) only depends on the second order statistics of the observations and on a shaping kernel that highlights the relevant parameters required for detection. Furthermore, the ML estimates of the unknown model parameters are derived for multi-frequency systems, which allow closed-form expressions for the GLRT statistic. The detection performance and the kernel interpretation are supported with simulation results.
dc.format.extent5 p.
dc.publisherIEEE Press. Institute of Electrical and Electronics Engineers
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal
dc.subject.lcshCognitive radio
dc.titleMulti-frequency GLRT spectrum sensing for wideband cognitive radio
dc.typeConference report
dc.subject.lemacRàdio cognitiva
dc.contributor.groupUniversitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
local.citation.authorFont-Segura, J.; Vazquez, G.; Riba, J.
local.citation.contributorIEEE International Conference on Communication (ICC)
local.citation.publicationName2011 IEEE International Conference on Communications

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