Enviaments recents

  • Distributed multivariate regression with unknown noise covariance in the presence of outliers: an MDL approach 

    López Valcarce, Roberto; Romero Gonzalez, Daniel; Sala Álvarez, José; Pagès Zamora, Alba Maria (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    We consider the problem of estimating the coefficients in a multivariable linear model by means of a wireless sensor network which may be affected by anomalous measurements. The noise covariance matrices at the different ...
  • Distributed AOA-based source positioning in NLOS with sensor networks 

    Giménez Febrer, Pedro Juan; Pagès Zamora, Alba Maria; Silva Pereira, Silvana; López Valcarce, Roberto (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Comunicació de congrés
    Accés obert
    This paper focuses on the problem of positioning a source using angle-of-arrival measurements taken by a wireless sensor network in which some of the nodes experience non lineof-sight (LOS) propagation conditions. In ...
  • Analysis of LDPC code syndrome entropy based on subgraphs 

    Matas Navarro, David; Lamarca Orozco, M. Meritxell (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    Accés restringit per política de l'editorial
    We propose a method to bound the syndrome entropy of linear block codes from their factor graph representation. It is specially suited for sparse graphs such as those of low density parity check codes. It is based on the ...
  • Distributed TLS estimation under random data faults 

    Silva Pereira, Silvana; Pagès Zamora, Alba Maria; López Valcarce, Roberto (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This paper addresses the problem of distributed estimation of a parameter vector in the presence of noisy input and noisy output data, as well as data faults, performed by a wireless sensor network in which only local ...
  • Efficient bit-level design of an on-board digital TV demultiplexer 

    Sala Álvarez, José; Pagès Zamora, Alba Maria; Vázquez Grau, Gregorio (1998)
    Text en actes de congrés
    Accés obert
    A bit-level description of the signal processing stage of an on-board integrated VLSI multi-carrier demodulator is presented in this paper, along with a description of the optimization procedure that has been developed for ...
  • Design and implementation of a DVB on-Board multi-carrier demodulator 

    Sala Álvarez, José; Pagès Zamora, Alba Maria; Sergio, Calvo; Prat Gomà, Josep Joan (1998)
    Text en actes de congrés
    Accés obert
    A description of the signal processing stage of an on-board integrated VLSI multi-carrier demodulator at the demultiplexing level is presented, along with a description of the optimization procedure that has been developed ...
  • A statistical reference criterion for adaptive filtering 

    Sala Álvarez, José; Vázquez Grau, Gregorio (Institute of Electrical and Electronics Engineers (IEEE), 1996)
    Text en actes de congrés
    Accés obert
    A cost function for adaptive filtering is proposed, based on the statistical reference criterion. The purpose of this criterion is to enforce a given probability density function at the output of a system. The only ...
  • Adaptive blind equalization and demodulation without channel and signal parameter extraction 

    Sala Álvarez, José; Vázquez Grau, Gregorio (1994)
    Text en actes de congrés
    Accés obert
    The problem of filtering a source of known statistics in noise and/or interference of unknown statistics is addressed in this paper. In a general framework, the optimum estimation (detection) of the desired signal requires ...
  • Global beamforming and demodulation for linearly modulated signals 

    Sala Álvarez, José; Vázquez Grau, Gregorio (Institute of Electrical and Electronics Engineers (IEEE), 1994)
    Text en actes de congrés
    Accés obert
  • Separation of digital communication signals through joint space-time decorrelation 

    Sala Álvarez, José; Vázquez Grau, Gregorio (1994)
    Text en actes de congrés
    Accés obert
    In this paper we derive the optimum linear algorithm for the separation by an array of a given number of cyclostationary signals of the type encountered in digital communications. Spatially and temporally uncorrelated noise ...

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