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dc.contributor.authorSala Álvarez, José
dc.contributor.authorVázquez Vilar, Gonzalo
dc.contributor.authorLópez Valcarce, Roberto
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.identifier.citationSala, J., Vázquez-Vilar, G., López, R. Multiantenna GLR detection of rank-one signals with known power spectrum in white noise with unknown spatial correlation. "IEEE transactions on signal processing", Juny 2012, vol. 60, núm. 6, p. 3065-3078.
dc.description.abstractMultiple-antenna detection of a Gaussian signal with spatial rank one in temporally white Gaussian noise with arbitrary and unknown spatial covariance is considered. This is motivated by spectrum sensing problems in the context of dynamic spectrum access in which several secondary networks coexist but do not cooperate, creating a background of spatially correlated broadband interference. When the temporal correlation of the signal of interest is assumed known up to a scale factor, the corresponding Generalized Likelihood Ratio Test is shown to yield a scalar optimization problem. Closed-form expressions of the test are obtained for the general signal spectrum case in the low signal-to-noise ratio (SNR) regime, as well as for signals with binary-valued power spectrum in arbitrary SNR. The two resulting detectors turn out to be equivalent. An asymptotic approximation to the test distribution for the low-SNR regime is derived, closely matching empirical results from spectrum sensing simulation experiments.
dc.format.extent14 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal
dc.subject.lcshSignal processing
dc.subject.otherCapon beamformer
dc.subject.otherCognitive radio
dc.subject.otherCorrelated noise
dc.subject.otherGLR test
dc.subject.otherMultiantenna array
dc.subject.otherNoise uncertainty
dc.subject.otherSpectral flatness measure
dc.subject.otherSpectrum sensing
dc.titleMultiantenna GLR detection of rank-one signals with known power spectrum in white noise with unknown spatial correlation
dc.subject.lemacTractament del senyal
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.authorSala, J.; Vázquez-Vilar, G.; López, R.
local.citation.publicationNameIEEE transactions on signal processing

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