Exploració per autor "Font Segura, Josep"Més informació

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    • Sampling walls in signal detection of Bernoulli nonuniformly sampled signals 

      Font Segura, Josep; Vázquez Grau, Gregorio; Riba Sagarra, Jaume (2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this work, we show the existence of sampling walls in signal detection of nonuniformly sampling wideband signals in the presence of noise uncertainty. A sampling wall is the sampling rate below which the target error ...

    • Single and multi-frequency wideband spectrum sensing with side-information 

      Font Segura, Josep; Vázquez Grau, Gregorio; Riba Sagarra, Jaume (2014-10-01)
      Article
      Accés obert
      This study addresses the optimal spectrum sensing detection based on the complete or partial side-information on the signal and noise statistics. The use of the generalised-likelihood ratio test (GLRT) involves maximum-likelihood ...

    • Sphericity minimum description length: asymptotic performance under unknown noise variance 

      Font Segura, Josep; Riba Sagarra, Jaume; Vázquez Grau, Gregorio (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés obert
      This paper revisits the model order selection problem in the context of second-order spectrum sensing in cognitive radio. Taking advantage of the recent interest on the generalized likelihood ratio (GLR), the asymptotic ...

    • Wideband cognitive radio: monitoring, detection and sparse noise subspace communication 

      Font Segura, Josep (Universitat Politècnica de Catalunya, 2014-07-24)
      Tesi
      Accés obert
      We are surrounded by electronic devices that take advantage of wireless technologies, from our computer mice, which require little amounts of information, to our cellphones, which demand increasingly higher data rates. ...