Multi-frequency GLRT spectrum sensing for wideband cognitive radio

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To access the full text documents, please follow this link: http://hdl.handle.net/2117/15099

dc.contributor	Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.contributor	Universitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions
dc.contributor.author	Font Segura, Josep
dc.contributor.author	Vázquez Grau, Gregorio
dc.contributor.author	Riba Sagarra, Jaume
dc.date	2011
dc.identifier.citation	Font-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.identifier.citation	10.1109/icc.2011.5963314
dc.identifier.uri	http://hdl.handle.net/2117/15099
dc.language.iso	eng
dc.publisher	IEEE Press. Institute of Electrical and Electronics Engineers
dc.relation	http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5963314
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal
dc.subject	Cognitive radio
dc.subject	Ràdio cognitiva
dc.title	Multi-frequency GLRT spectrum sensing for wideband cognitive radio
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/conferenceObject
dc.description.abstract	The 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.description.abstract	Peer Reviewed

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