Now showing items 41-60 of 1054

    • A simple algorithm to distribute optimally a number of external base stations in a microcellular environment 

      Agustí Comes, Ramon; Monfort, Xavier Querol; Pérez Romero, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 1998)
      Conference report
      Open Access
      A simple algorithm is proposed for the optimal distribution of a number of base stations in a microcellular environment. Criteria are defined in order to decide the combinations of antennas that should be tested, and a ...
    • A simple and efficient face detection algorithm for video database applications 

      Albiol, A; Torres Urgell, Lluís; Delp, E; Bouman, C (Institute of Electrical and Electronics Engineers (IEEE), 2000)
      Conference report
      Open Access
      The objective of this work is to provide a simple and yet efficient tool to detect human faces in video sequences. This information can be very useful for many applications such as video indexing and video browsing. In ...
    • A simple method to generate optical beams with a screw phase dislocation 

      Petrov, D V; Canal Bienzobas, Fernando; Torner Sabata, Lluís (1997-09)
      Article
      Restricted access - publisher's policy
      In this work, it is shown experimentally that optical beams that contain a phase dislocation can be generated with a laser oscillating in the fundamental mode and a cylindrical-lens mode converter.
    • A statistical reference criterion for adaptive filtering 

      Sala Álvarez, José; Vázquez Grau, Gregorio (Institute of Electrical and Electronics Engineers (IEEE), 1996)
      Conference report
      Open Access
      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 ...
    • A time-frequency approach to epoch detection 

      Navarro Mesa, Juan Luis; Esquerra Llucià, Ignasi (ESCA - J.M. PARDO, E. ENRIQUEZ, J. ORTEGA, J. FERREIROS GTM-UPM, 1995)
      Conference report
      Open Access
      The aim of this paper is to find a reliable function using Time-Frequency Representations (TFR) for epoch detection, making no assumptions about the speech production model. This is achieved by adapting the optimum ...
    • A two-dimensional Doppler-Radiometer for Earth observation 

      Camps Carmona, Adriano José; Swift, C T (IEEE Piscataway, 2000)
      Conference report
      Open Access
      Compared to synthetic aperture radars (SARs), the angular resolution of microwave radiometers is quite poor. Traditionally, it has been limited by the physical size of the antenna. However, the angular resolution can be ...
    • A Unified Parameterization Scheme for Noisy Speech Recognition 

      Hernando Pericás, Francisco Javier; Nadeu Camprubí, Climent (ESCA, 1997)
      Conference report
      Open Access
      LP-based and mel-cepstrum coefficients are by far the most prevalent parameterization techniques in speech recognition. The conventional LP technique is known to be very sensitive to the presence of additive noise and there ...
    • A video object generation tool allowing friendly user interaction 

      Marcotegui Iturmendi, Beatriz; Correia Fernandez-Pereira, Paulo; Marqués Acosta, Fernando; Mech, R.; Rosa, R; Wollborn, M; Zanoguera, Francisca (Institute of Electrical and Electronics Engineers (IEEE), 1999)
      Conference report
      Open Access
      In this paper we describe an interactive video object segmentation tool developed in the framework of the ACTS-AC098 MOMUSYS project. The Video Object Generator with User Environment (VOGUE) combines three different sets ...
    • A VQ based speaker recognition system based in histogram distances. Text independent and for noisy environements 

      Monte Moreno, Enrique; Arqué, Ramón; Miro, Xavi (Robert H. Mannel and Jordi Robert-Ribes, 1998)
      Conference report
      Open Access
      In speaker recognition systems based on VQ, normally each speaker is assigned a codebook, and the classification is done by means of the a distortion distance of the utterance computed by means of each codebook. In [1] ...
    • El Abandono de "Lis Esteles" 

      Escudero Royo, Miguel (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 2006)
      Article
      Open Access
    • El Abandono de "Lis esteles" 

      Escudero Royo, Miguel (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1999)
      Article
      Open Access
    • Absorción de radiación procedente de terminales móviles GSM 

      Ferrer Pérez, Vicent; Nuño Fernández, Luis (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 2002)
      Article
      Open Access
      ¿Son peligrosos los Sistemas de Comunicaciones Móviles? Ésta es una pregunta que se han hecho muchos medios de comunicación dado el revuelo social de los usuarios respecto a esta duda. De hecho, pese a que es bien ...
    • El Acceso de usuario a Internet de banda ancha 

      Domingo Pascual, Jordi (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1997)
      Article
      Open Access
    • Active control of vibrant actuators with adaptive adjustment of the reference 

      Bertran Albertí, Eduardo; Montoro López, Gabriel (Fuertes, J.M. (ed.) IEEE, 1999)
      Conference report
      Open Access
      An improved adaptive filter for eliminating periodic vibrations of unknown frequency in rotary machinery is presented. The proposed canceller is based on a usual bank of digital adaptive notch filters, each filter tuned ...
    • Active zone self-similarity of fractal sierpinski antenna verified using infra-red thermograms 

      González, J.M.; Navarro Bernal, Manuel; Puente Baliarda, Carles; Romeu Robert, Jordi; Aguasca Solé, Alberto (Institution of Electrical Engineers, 1999-08)
      Article
      Open Access
      The surface current distribution of a Sierpinski fractal antenna shows a self-similar behaviour determined by the self-similar properties of its geometry. The application of infra-red thermography to electromagnetic near ...
    • Actividades del grupo EEF en el contexto de la red europea TMR "Polarimetría radar: Teoría y aplicaciones" 

      Fabregas Canovas, Francisco Javier; López Martínez, Carlos; Broquetas Ibars, Antoni (2000)
      Conference report
      Open Access
      The activity of the EEF group in the TMR European Project Radar Polarimetry: Theory and Applications will be presented in this paper. We have developed new polarimetric-interferometric retrieval algorithms and enhancement ...
    • Actividades del LCMM-UB 

      Marco Colás, Santiago (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1993)
      Article
      Open Access
    • Actividades del sector espacial 

      AESS Estudiants (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1997)
      Article
      Open Access
    • Actividades en procesado de la imagen del Grupo de Procesado de Señal 

      Marqués Acosta, Fernando; Gasull Llampallas, Antoni; Torres Urgell, Lluís (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1993)
      Article
      Open Access
    • Actividades en tratamiento de voz del Grupo de Procesado de Señal 

      Hernando Pericás, Francisco Javier (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1993)
      Article
      Open Access