Ara es mostren els items 13-24 de 24

    • Generalized formulation of an encryption system based on a joint transform correlator and fractional Fourier transform 

      Vilardy Ortiz, Juan Manuel; Torres, Yezid; Millán Garcia-Varela, M. Sagrario; Pérez Cabré, Elisabet (Institute of Physics (IOP), 2014-12-01)
      Article
      Accés obert
      We propose a generalization of the encryption system based on double random phase encoding (DRPE) and a joint transform correlator (JTC), from the Fourier domain to the fractional Fourier domain (FrFD) by using the fractional ...
    • Implementación y análisis de transformadoras de Fourier para protein-docking en cell BE 

      González Alvárez, Cecilia M. (Universitat Politècnica de Catalunya, 2007-06-27)
      Projecte/Treball Final de Carrera
      Accés obert
    • Implementation and analysis of super-resolution image techniques 

      Beaus Iranzo, Pablo (Universitat Politècnica de Catalunya, 2022-07-05)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Politecnico di Milano
      Super-Resolution (SR) is a branch of deep learning aiming at improving the resolution of an image preserving as much detail as possible. This technology applied to overhead imagery has been on the rise in the recent years, ...
    • Log-periodic optical antennas 

      Pavlov, Radostin Stefanov (Universitat Politècnica de Catalunya, 2011-09-07)
      Projecte Final de Màster Oficial
      Accés obert
      English: In recent years optical antennas have been attracting very strong interest due to the unique possibilities they offer for manipulating light on a sub-wavelength scale. Most published work deals with relatively ...
    • Mean field study of doubly Dipolar Bose condensates 

      Pereira Lladó, Iker (Universitat Politècnica de Catalunya, 2023-07-10)
      Treball Final de Grau
      Accés obert
      Study of the behavior and configurations of a weakly interacting Bose-Einstein condensate under the influence of doubly dipolar interactions.
    • Non-linear spectral estimation 

      Lagunas Hernandez, Miguel A. (Institute of Electrical and Electronics Engineers (IEEE), 1987)
      Text en actes de congrés
      Accés obert
      This work describes the use of constraints in variational procedures for spectral analysis. It is reported how the designer in a variational approach for spectral estimation has to select a set of constraints. At the same ...
    • Optical warning of bicycle riders concerning motorized vehicles closing from behind using the smartphone microphone 

      Talaya Vidal, Alba (Universitat Politècnica de Catalunya, 2022-02-02)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Technische Universität Wien
      Deaf cyclists do not receive acoustic warnings of motor vehicles approaching from behind. This can be very dangerous because they can get startled and wobble, making them loose stability and more exposed to possible ...
    • Radix-R FFT and IFFT factorizations for parallel implementation 

      Marti Puig, Pere; Reig Bolano, Ramon; Parisi Baradad, Vicenç (2009)
      Article
      Accés restringit per política de l'editorial
      Two radix-R regular interconnection pattern families of factorizations for both the FFT and the IFFT -also known as parallel or Pease factorizations- are reformulated and presented. Number R is any power of 2 and N, the ...
    • Rayleigh estimates: performing like SVD 

      Lagunas Hernandez, Miguel A.; Cabrera-Bean, Margarita (1988)
      Text en actes de congrés
      Accés obert
      This paper describes the structure of the so- called Rayleigh estimates and the features they share with indirect SVD like procedures. The problem of finding procedures of high resolution in spectral estimation is faced ...
    • Simulation of an OFDM system for a Wireless Battery Management System 

      Gaitán Gutiérrez, Fernando (Universitat Politècnica de Catalunya, 2014-11-20)
      Projecte/Treball Final de Carrera
      Accés obert
      Realitzat a/amb:   Karlsruher Institut für Technologie
      [ANGLÈS] With the aim of innovating a new physical layer that can be used as an alternative to the standard of the Battery Management System (BMS, CAN-Bus), wireless approach proposes a new BMS communication system to ...
    • Study of compression techniques for partial differential equation solvers 

      Fustagueras Gómez, Alex (Universitat Politècnica de Catalunya, 2023-07-14)
      Treball Final de Grau
      Accés obert
      Partial Differential Equations (PDEs) are widely applied in many branches of science, and solving them efficiently, from a computational point of view, is one of the cornerstones of modern computational science. The finite ...
    • Transformada de fourier en processament no lineal del senyal 

      Pagès Zamora, Alba Maria (Universitat Politècnica de Catalunya, 1996-12-13)
      Tesi
      Accés obert
      La tesis presenta un modelo no recursivo de sistemas no lineales (SNLS) basado en las series de fourier, estableciendo una comparación con el modelo de volterra en términos de coste computacional y diseño. <br/><br/>Del ...