Ara es mostren els items 1-20 de 32

  • Analytic performance evaluation of cumulant-based arma system identification methods 

    Rodríguez Fonollosa, José Adrián; Vidal Manzano, José (IEEE IEEE PRESS, 1993)
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    The authors perform an analytic study of some cumulant-based methods for estimating the AR parameters of ARMA processes. The analysis includes new AR identifiability results for pure AR process and the analytic performance ...
  • Analytic performance evaluation of cumulant-based fir system identification methods 

    Rodríguez Fonollosa, José Adrián; Mendel, J M (IEEE IEEE PRESS, 1992)
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    The covariances of the third- and fourth-order sample cumulants of stationary processes are derived. The resulting expressions are used to obtain the analytical performance of such methods as a function of the coefficients ...
  • Characterization of phylogenetic networks with NetTest 

    Arenas, Miguel; Patricio, Mateus; Posada, David; Valiente Feruglio, Gabriel Alejandro (2010-05-20)
    Article
    Accés obert
    Background: Typical evolutionary events like recombination, hybridization or gene transfer make necessary the use of phylogenetic networks to properly depict the evolution of DNA and protein sequences. Although several ...
  • Deterministic and stochastic assessment of the harmonic currents consumed by discharge lamps 

    Mesas García, Juan José; Sainz Sapera, Luis; Ferrer Biosca, Alberto (2011-01)
    Article
    Accés restringit per política de l'editorial
  • Dynamic cluster resizing 

    González González, José; González Colás, Antonio María (Institute of Electrical and Electronics Engineers (IEEE), 2003)
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    Processor resources required for an effective execution of an application vary across different sections. We propose to take advantage of clustering to turn-off resources that do not contribute to improve performance. ...
  • Empirical approach for real-time estimation of air flow rates in a subway station 

    Di Perna, Costanzo; Carbonari, Alessandro; Ansuini, Roberta; Casals Casanova, Miquel (2014-05-01)
    Article
    Accés restringit per política de l'editorial
    The EU-funded project called SEAM4US (Sustainable Energy mAnageMent for Underground Stations) is targeted to define advanced control systems for cost-effective management of subway stations, which will be applied to the pilot
  • Estimation of the modulation index of cpm signals using hos 

    Rodríguez Fonollosa, Javier; Rodríguez Fonollosa, José Adrián (Institute of Electrical and Electronics Engineers (IEEE), 1993)
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    Three simple methods are proposed for the estimation of the modulation index of continuous phase modulated signals in noise. These methods employ the estimated autocorrelation and fourth-order cumulant sequences of the ...
  • Estimation of the uncertainty in time domain indices of RR time series 

    García González, Miguel Ángel; Fernández Chimeno, Mireya; Ramos Castro, Juan José (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2007-03-31)
    Article
    Accés obert
    A method for estimating the uncertainty in time-domain indices of RR time series is described. The method relies on the central limit theorem that states that the distribution of a sample average of independent samples has ...
  • 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)
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    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 ...
  • Frames: a maximum entropy statistical estimate of the inverse problem 

    Rebollo Neira, Laura; Fernández Rubio, Juan Antonio; Plastino, Angel Luís (1997-01)
    Article
    Accés obert
    A maximum entropy statistical treatment of an inverse problem concerning frame theory is presented. The problem arises from the fact that a frame is an overcomplete set of vectors that defines a mapping with no unique ...
  • Generalized equipartition theorem and confining walls 

    Rey Oriol, Rosendo (2015-06)
    Article
    Accés obert
    It is shown that the generalized equipartition theorem as applied to the momentum may fail, even though the usual conditions of validity are met. This failure is linked to the nature of the confining walls, with ideal walls ...
  • Image restoration using HOS and the Radon transform 

    Sayrol Clols, Elisa; Chrysostomos, Nikias; Gasull Llampallas, Antoni (. IEEE, 1993)
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    The authors propose the use of higher-order statistics (HOS) to study the problem of image restoration. They consider images degraded by linear or zero phase blurring point spread functions (PSF) and additive Gaussian ...
  • Image restoration using HOS and the Radon transform 

    Sayrol Clols, Elisa; Nikias, C L; Gasull Llampallas, Antoni (IEEE IEEE PRESS, 1993)
    Text en actes de congrés
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    The authors propose the use of higher-order statistics (HOS) to study the problem of image restoration. They consider images degraded by linear or zero phase blurring point spread functions (PSF) and additive Gaussian ...
  • N-gram-based Machine Translation 

    Mariño Acebal, José Bernardo; Banchs Martínez, Rafael Enrique; Crego Clemente, Josep Maria; Gispert Brosa, Adrian de; Lambert, Patrik; Rodríguez Fonollosa, José Adrián; Ruiz Costa-Jussà, Marta (2006-12)
    Article
    Accés obert
    This article describes in detail an n-gram approach to statistical machine translation. This approach consists of a log-linear combination of a translation model based on n-grams of bilingual units, which are referred to ...
  • On the inverse windowed Fourier transform 

    Rebollo Neira, Laura; Fernández Rubio, Juan Antonio (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1999-11-30)
    Article
    Accés obert
    The inversion problem concerning the windowed Fourier transform is considered. It is shown that, out of the infinite solutions that the problem admits, the windowed Fourier transform is the "optimal" solution according to ...
  • Optimum energy allocation for massive spread-spectrum multiple access in networks of uncoordinated energy-limited terminals 

    Villares Piera, Nemesio J.; Rey Micolau, Francesc; Sala Álvarez, José (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This paper derives the energy allocation policy that maximizes the aggregate spectral efficiency of an uncoordinated spread-spectrum multiple access network operating in the large-user regime and subject to a longterm ...
  • Pitch determination of noisy speech using higher order statistics 

    Moreno Bilbao, M. Asunción; Rodríguez Fonollosa, José Adrián (. IEEE, 1992)
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    The use of third-order statistics to determine the pitch of a speech signal and how they can eliminate the effect of a wide range of noises, including those generated by periodic sources, are shown. The proposed algorithm ...
  • Positive time-frequency distributions based on joint marginal constraints 

    Rodríguez Fonollosa, Javier (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1996-08-01)
    Article
    Accés obert
    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 ...
  • Reply to 

    Egozcue Rubí, Juan José (2009-10)
    Article
    Accés restringit per política de l'editorial
  • Routing with prioritization based on statistics in OBS networks 

    Escolar Díaz, Mariana; Hesselbach Serra, Xavier (2009)
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    This paper introduces a new strategy to provide QoS in IP/OBS networks, using Routing with Prioritization Based on Statistics (RPBS). This proposal uses the feedback scheme in optical networks to provide statistical knowledge ...