Ara es mostren els items 12061-12080 de 98404

  • Asymptotic equivalence between the unconditional maximum likelihood and the square-law nonlinearity symbol timing estimation 

    López Salcedo, José Antonio; Vázquez Grau, Gregorio (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2006-01-31)
    Article
    Accés obert
    This paper provides a systematic approach to the problem of nondata aided symbol-timing estimation for linear modulations. The study is performed under the unconditional maximum likelihood framework where the ...
  • Asymptotic error exponents in energy-detector and estimator-correlator signal detection 

    Font Segura, Josep; Vázquez Grau, Gregorio; Riba Sagarra, Jaume (IEEE Computational Intelligence Society, 2012)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The performance in signal detection is evaluated by the error (false-alarm and missed-detection) probabilities. However, calculating these probabilities is a difficult task in practice. This paper studies the asymptotic ...
  • Asymptotic MAP upper bounds for LDPC codes 

    Matas Navarro, David; Lamarca Orozco, M. Meritxell (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This paper aims at computing tight upper bounds for the maximum a posteriori threshold of low-density parity check codes in the asymptotic blocklength regime for the transmission over binary-input memoryless symmetricoutput ...
  • Asymptotic normality of the integrated square error of a density estimator in the convolution model 

    Butucea, Cristina (Institut d'Estadística de Catalunya, 2004)
    Article
    Accés obert
    In this paper we consider a kernel estimator of a density in a convolution model and give a central limit theorem for its integrated square error (ISE). The kernel estimator is rather classical in minimax theory when the ...
  • Asymptotic size of Herman rings of the complex standard family by quantitative quasiconformal surgery 

    Fagella Rabionet, Núria; Martínez-Seara Alonso, M. Teresa; Villanueva Castelltort, Jordi (2003)
    Article
    Accés obert
    In this paper we consider the complexification of the Arnold standard family of circle maps given by $\widetilde F_{\alpha,\ep}(u)=u{\rm e}^{{\rm i}\alpha} {\rm e}^{\frac{\ep}{2}(u-\frac{1}{u})}$, with $\alpha=\alpha( ...
  • Asymptotic size of Herman Rings using quasiconformal surgery 

    Granell i Yuste, Francesc (Universitat Politècnica de Catalunya, 2016-07)
    Treball Final de Grau
    Accés obert
    This thesis gives an introduction to the theory of quasiconformal surgery. To that end, we consider the complexification of the Arnol'd standard family of circle maps. These functions are analytically linearisable under ...
  • Asymptotic study of canonical correlation analysis: from matrix and analytic approach to operator and tensor approach 

    Fine, Jeanne (Institut d'Estadística de Catalunya, 2003)
    Article
    Accés obert
    Asymptotic study of canonical correlation analysis gives the opportunity to present the different steps of an asymptotic study and to show the interest of an operator and tensor approach of multidimensional asymptotic ...
  • Asymptotic study of subcritical graph classes 

    Drmota, Michael; Fusy, Éric; Kang, Mihyun; Kraus, Veronika; Rué Perna, Juan José (2011-12-01)
    Article
    Accés obert
    We present a unified general method for the asymptotic study of graphs from the so-called subcritical graph classes, which include the classes of cacti graphs, outerplanar graphs, and series-parallel graphs. This general ...
  • Asymptotic theory: some recent developments 

    Cox, D. R. (Universitat Politècnica de Barcelona. Centre de Càlcul, 1983-12)
    Article
    Accés obert
    A review is given of recent work on asymptotic theory leading to a recommendation to use ratio likelihood rests with, where available, a Bartlett adjustment factor.
  • Asymptotic time domain evaluation of a multilevel multiphase PWM converter voltage quality 

    Ruderman, Alex; Reznikov, Boris; Busquets Monge, Sergio (IEEE Press. Institute of Electrical and Electronics Engineers, 2012-10-24)
    Article
    Accés restringit per política de l'editorial
    Voltage total harmonic distortion and quadratic voltage ripple criteria are accepted figures of merit of a multilevel pulse width modulation (PWM) converter voltage quality. The dominating frequency domain approach does ...
  • Asymptotic Tracking with DC-to-DC Bilinear Power Converters 

    Olm i Miras, Josep M. (Universitat Politècnica de Catalunya, 2004-04-16)
    Tesi
    Accés obert
    Avui en dia la conversió DC-AC té una important aplicació pràctica en el camp dels sistemes de potència ininterrompuda (SPI). Els convertidors commutats bàsics (el buck, lineal, i el boost i el buck-boost, no lineals) ...
  • Asymptotically optimal filtering in linear systems with fractional Brownian noises 

    Le Breton, Alain; Kleptsyna, Marina L.; Viot, Michel (Institut d'Estadística de Catalunya, 2004)
    Article
    Accés obert
    In this paper, the filtering problem is revisited in the basic Gaussian homogeneous linear system driven by fractional Brownian motions. We exhibit a simple approximate filter which is asymptotically optimal in the sense ...
  • Asymptotically optimal linear shrinkage of sample LMMSE and MVDR filters 

    Serra, Jordi; Nájar Martón, Montserrat (2014-07-15)
    Article
    Accés restringit per política de l'editorial
    Conventional implementations of the linearminimum mean-square (LMMSE) and minimum variance distortionless response (MVDR) estimators rely on the sample matrix inversion (SMI) technique, i.e., on the sample covariance matrix ...
  • Asymptotically optimum energy profile for successive interference cancellation in DS-CDMA under a power unbalance constraint 

    Sala Álvarez, José; Rey Micolau, Francesc; Villares Piera, Nemesio J. (2012-02)
    Article
    Accés restringit per política de l'editorial
    A new Ordinary Differential Equation (ODE) governing the SNIR evolution of a Successive Interference Canceller (SIC) for DS-CDMA is derived when the number of users tends to infinity and all users share the same channel ...
  • Asymptotically-optimal path planning on manifolds 

    Jaillet, Leonard Georges; Porta Pleite, Josep Maria (2012)
    Text en actes de congrés
    Accés obert
    This paper presents an approach for optimal path planning on implicitly-defined configuration spaces such as those arising, for instance, when manipulating an object with two arms or with a multifingered hand. In this kind ...
  • Asynchronous interface specification, analysis and synthesis 

    Kishinewsky, M; Cortadella Fortuny, Jordi; Kondratyev, A; Lavagno, L (1998-03)
    Report de recerca
    Accés obert
    Interfaces, by nature, are often asynchronous since they serve for connecting multiple distributed modules/agents without common clock. However, recent development in theory of asynchronous design in the area of ...
  • Asynchronous pulse logic cell for threshold logic and Boolean networks 

    Lambie, J; Moll Echeto, Francisco de Borja; González Jiménez, José Luis; Rubio Sola, Jose Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2005)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In this article, a fully digital CMOS circuit for asynchronous pulse cells is presented. The proposed circuit has a high noise tolerance and no static power consumption. Furthermore it has a high functional programmability. ...
  • Asynchronous runtime for task-based dataflow programming models 

    Bosch Pons, Jaume (Universitat Politécnica de Catalunya, 2017-07)
    Projecte Final de Màster Oficial
    Accés obert
    Realitzat a/amb:  Barcelona Supercomputing Centre (BSC)
    The importance of parallel programming is increasing year after year since the power wall popularized multi-core processors, and with them, shared memory parallel programming models. In particular, task-based programming ...
  • Asynchronous simulation of a self-synchronized duty-cycling mechanism for mobile sensor networks 

    Hernández Pibernat, Hugo; Blum, Christian (2009)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In previous work we introduced a self-synchronized duty-cycling mechanism for mobile sensor networks with energy harvesting capabilities, inspired by the self-synchroned sleeping patterns that can be observed in real ant ...
  • Ataque ácido en cementos de antiguos pozos en repositorios de CO2 

    Martínez Estévez, Ariadna (Universitat Politècnica de Catalunya, 2016-05-27)
    Projecte Final de Màster Oficial
    Accés obert
    L’emmagatzemen de diòxid de carboni en medis geològics topa entre d’altres amb la preocupació per la generació de vies d’escap cap a l’atmosfera durant l’etapa de desenvolupament dels pous i producció d’aquest . Aquestes ...