Now showing items 1-20 of 27

  • A flatness-based generalized optimization approach to spectral estimation 

    Nadeu Camprubí, Climent; Bertran Salvans, Miguel (1990-04)
    Article
    Open Access
    In the optimization formulation, once the known autocorrelations are fixed as constraints, the objective functional completely characterizes the corresponding method of spectral estimation. After observing that this ...
  • An improved maximum likelihood method for power spectral density estimation 

    Lagunas Hernandez, Miguel A.; Gasull Llampallas, Antoni (1984-02)
    Article
    Open Access
  • Caracterización estacional de la hidrodinámica interior del Puerto de Tarragona 

    Martínez Velasco, Rubén (Universitat Politècnica de Catalunya, 2012-06)
    Minor thesis
    Open Access
    [ANGLÈS] Reducing environmental impact is becoming a major issue in harbours, new environmental regulations are more stringent and harbours must maintain a good image, which does not affect the nearby urban areas and ...
  • Data pre-processing for high-resolution adaptive algorithms 

    Vázquez Grau, Gregorio; Gasull Llampallas, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 1988)
    Conference report
    Open Access
    The inclusion of adaptive methods in high-resolution spectral estimation algorithms is considered. The generation of a complete family of spectral estimators from the normalized maximum-likelihood method (MLM) is discussed. ...
  • Data pre-processing for high-resolution adaptive algorithms 

    Vázquez Grau, Gregorio; Gasull Llampallas, Antoni (Institute of Electrical and Electronics Engineers (IEEE), 1988)
    Conference report
    Open Access
    The inclusion of adaptive methods in high-resolution spectral estimation algorithms is considered. The generation of a complete family of spectral estimators from the normalized maximum-likelihood method (MLM) is discussed. ...
  • Evaluation of Laplacian diaphragm electromyographic recording in a dynamic inspiratory maneuver 

    Estrada, Luis; Torres Cebrián, Abel; Garcia Casado, Javier; Prats Boluda, Gema; Ye-Lin, Y.; Jané Campos, Raimon (2014)
    Conference report
    Restricted access - publisher's policy
    The analysis of the electromyographic signal of the diaphragm muscle (EMGdi) can provide important information for evaluating the respiratory muscular function. The EMGdi can be recorded using surface Ag/AgCl disc electrodes ...
  • Fir system identification using a linear combination of cumulants 

    Rodríguez Fonollosa, José Adrián; Vidal Manzano, José; Moreno Bilbao, M. Asunción (. IEEE INT. CONF. ON ACOUSTICS, SPEECH & SIGNAL PROC, 1992)
    Conference report
    Open Access
    A general linear approach to identifying the parameters of a moving average (MA) model from the statistics of the output is developed. It is shown that, under some constraints, the impulse response of the system can be ...
  • Focusing wideband arrays from 2-D spectral estimates 

    Lagunas Hernandez, Miguel A.; Vázquez Grau, Gregorio (Institute of Electrical and Electronics Engineers (IEEE), 1990)
    Conference report
    Open Access
  • Frequency averaging: a useful multiwindow spectral analysis approach 

    Nadeu Camprubí, Climent; Padrell, Jaume; Esquerra Llucià, Ignasi (IEEE IEEE, 1997)
    Conference report
    Open Access
    The multiwindow approach is a meaningful framework for nonparametric spectral estimation. It also encompasses several conventional methods as WOSA and frequency-averaged periodogram. Recently, some authors claimed that the ...
  • High level spectral-based análisis of power concumption in DSP's systems 

    Calomarde Palomino, Antonio; Mateo Peña, Diego; Rubio Sola, Jose Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2006)
    Conference report
    Restricted access - publisher's policy
    In this paper, an efficient technique to evaluate temporal correlation and transition activity at high level in DSP systems is presented. The method is based on the spectral distribution of signals and has the advantage ...
  • High performance SVD-like procedure for spectral estimation using Rayleigh function estimates 

    Lagunas Hernandez, Miguel A. (Institute of Electrical and Electronics Engineers (IEEE), 1998)
    Conference report
    Open Access
    The author describes how Rayleigh estimates can be viewed as a method which performs singular-value decomposition (SVD) procedure without doing it. As a short cut to get principal-component reduction, Rayleigh quotients ...
  • Maximum flatness spectral modeling 

    Nadeu Camprubí, Climent (1990-11)
    Article
    Open Access
  • Novel periodogram and Capon spectral analysis based on nonuniform sampling 

    Font Segura, Josep; Vázquez Grau, Gregorio; Riba Sagarra, Jaume (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
    Conference report
    Restricted access - publisher's policy
    The spectrum analysis problem based on the periodogram and Capon estimates from a nonuniformly sampled signal is addressed. The nonuniform sampling process is cast as a linear projection matrix which encompasses several ...
  • On the cramer-rao bound of finite-length cepstrum spectral estimators 

    Nadeu Camprubí, Climent; Lleida Solano, Eduardo (Institution of Electrical Engineers, 1990-07)
    Article
    Open Access
  • On the stability in phase-lag heat conduction with two temperatures 

    Magaña Nieto, Antonio; Miranville, Alain; Quintanilla de Latorre, Ramón (2018-06-15)
    Article
    Open Access
    We investigate the well-posedness and the stability of the solutions for several Taylor approximations of the phase-lag two-temperature equations.We give conditions on the parameters which guarantee the existence and ...
  • On the time decay in phase-lag thermoelasticity with two temperatures 

    Magaña Nieto, Antonio; Miranville, Alain; Quintanilla de Latorre, Ramón (AMER INST MATHEMATICAL SCIENCES-AIMS, 2019-09-12)
    Article
    Open Access
    The aim of this paper is to study the time decay of the solutions for two models of the one-dimensional phase-lag thermoelasticity with two temperatures. The first one is obtained when the heat flux vector and the inductive ...
  • Pitch determination using the cepstrum of the one-sided autocorrelation sequence 

    Nadeu Camprubí, Climent; Pascual Gilabert, Jordi; Hernando Pericás, Francisco Javier (1991)
    Conference report
    Open Access
    A novel cepstral function, the cepstrum (CEP) of the one-sided autocorrelation sequence (COSA), is presented and applied to pitch determination of speech signals. This pitch determination algorithm (PDA) starts from the ...
  • Positive time-frequency distributions based on joint marginal constraints 

    Rodríguez Fonollosa, Javier (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1996-08-01)
    Article
    Open Access
    This correspondence studies the formulation of members of the Cohen-Posch class of positive time-frequency energy distributions. Minimization of cross-entropy measures with respect to different priors and the case of ...
  • Simulación físico-matemática de las turbulencias en los incendios de edificación. Propuesta de una nueva metodología de análisis relativa a la verificación cualitativa de las turbulencias simuladas 

    Muñoz Blanc, Carlos (Universitat Politècnica de Catalunya, 2014-05-22)
    Doctoral thesis
    Open Access
    En la Unión Europea, y más concretamente en España, el análisis prestacional de cualquier edificio frente a la acción del fuego es aún un hecho aislado y poco habitual, a pesar de las ventajas que el mismo comporta. No ...
  • Spectral iterative algorithm for RCS computation in electrically large or intermediate perfectly conducting cavities 

    Rius Casals, Juan Manuel; Lozano Solsona, Angel; Cardama Aznar, Ángel; Jofre Roca, Lluís (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1994-06-01)
    Article
    Open Access
    A novel algorithm designed to compute efficiently and accurately the high-frequency electromagnetic scattering from open-ended waveguide cavities is presented. The cavity is converted into a stepped-waveguide model so that ...