Now showing items 1-20 of 23

  • 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 ...
  • Adaptative supression on narrow-band vibrations 

    Bertran Albertí, Eduardo; Montoro López, Gabriel (1998)
    Conference report
    Open Access
    The aim of the paper is to develop a theoretical analysis and implementation of an active control canceller devoted to eliminate narrow-band vibrations in rotary machines. The proposed system uses a bank of digital adaptive ...
  • Adaptive filtrate: signal processing in the measurement of haemoglobin using non-invasive method. 

    Herruzo Lodeiro, Cristina (Universitat Politècnica de Catalunya, 2014-07-14)
    Master thesis (pre-Bologna period)
    Open Access
    Covenantee:  University of Limerick
    This project is part of another project which is currently running at the University of Limerick (Ireland) and who is objective is to measure the concentration of haemoglobin (Hb) in blood using a non-invasive optical ...
  • An adaptative fuzzy logic enhancer for rejection of narrowband interference in DS-Spread Spectrum 

    Pérez Neira, Ana Isabel; Antón Haro, Carles; Lagunas Hernandez, Miguel A. (1998)
    Conference report
    Open Access
    This work develops a novel adaptive fuzzy line enhancer that, based on a fuzzy basis function expansion, successfully solves the non-linear problem of narrowband interference estimation and rejection in direct sequence-spread ...
  • An adaptive scattering-mechanism-based filtering for multi-temporal pol(In)SAR data 

    Zhao, Feng; Mallorquí Franquet, Jordi Joan (VDE Conference Publications, 2018)
    Conference report
    Restricted access - publisher's policy
    This paper presents a new adaptive filtering method for multi-temporal Pol(In)SAR images' denoising. Based on the polarimetric scattering mechanism of the given PolSAR data, the filtering first classifies all pixels into ...
  • A new non-linear system for estimating and suppressing narrowband interference in PN spread spectrum modulation 

    Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A. (1998)
    Conference report
    Open Access
    This work develops a novel dynamic fuzzy logic system that, based on a fuzzy basis function expansion, successfully solves the non-linear problem of narrowband interference prediction and rejection in DS-SS. A fuzzy basis ...
  • Array covariance error measurement in adaptive parameter estimation 

    Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A. (. WORKSHOP ON ADAPTIVE ALGORITHMS IN COMMUNICATIONS, 1992)
    Conference report
    Open Access
    The small error approximation is used to derive a linear relationship between the source parameters (i.e. power levels and directions of arrival) and a measurement of the covariance error matrix, defined as the difference ...
  • Array covariance error measurement in adaptive source estimation 

    Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A. (1994)
    Conference report
    Open Access
    The small error approximation is used to derive a linear relationship between the source parameters (i.e. power levels and directions of arrival) and a measurement of the covariance error matrix, defined as the difference ...
  • Array covariance error measurement in adaptive source parameter estimation 

    Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A. (1992)
    Conference report
    Open Access
    The small error approximation is used to derive a linear relationship between the source parameters (i.e. power levels and directions of arrival) and a measurement of the covariance error matrix, defined as the difference ...
  • A stationary reference frame grid synchronization system for three-phase grid-connected power converters under adverse grid conditions 

    Rodríguez Cortés, Pedro; Luna Alloza, Álvaro; Muñoz Aguilar, Raúl Santiago; Etxebarría, Ion; Teodorescu, Remus; Blaabjerg, Frede (2012-01)
    Article
    Restricted access - publisher's policy
    Grid synchronization algorithms are of great importance in the control of grid-connected power converters, as fast and accurate detection of the grid voltage parameters is crucial in order to implement stable control ...
  • 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 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 ...
  • Cardiac interference reduction in diaphragmatic MMG signals during a maintained inspiratory pressure test 

    Sarlabous Uranga, Leonardo; Torres Cebrián, Abel; Fiz Fernández, José Antonio; Jané Campos, Raimon (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Restricted access - publisher's policy
    A recursive least square (RLS) adaptive filtering algorithm for reduction of cardiac interference in diaphragmatic mecanomyographic (MMGdi) signals is addressed in this paper. MMGdi signals were acquired with a capacitive ...
  • Continuous-time adaptive control applied to rf amplifier linearization 

    Bertran Albertí, Eduardo; Montoro López, Gabriel; Talavera Pedrol, Núria (O.YUKSEL IEEE, 1994)
    Conference report
    Open Access
    A new approach to the RF power amplifier linearization problem is presented. The proposed solution applies non-linear theories (Lyapunov direct method) to adaptive filtering in order to improve the linearity of the RF ...
  • Cross-coupled LMS for quadratic constrained filter design 

    Lagunas Hernandez, Miguel A.; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 1999)
    Conference report
    Open Access
    Quadratic constrained maximization appears as the central problem in many filter design methods and signal processing applications, whenever the processing or filtering entails the maximization of a signal to noise ratio. ...
  • Design of adaptative digital filters for phase extraction in complex fringe patterns obtained using the Ronchi test 

    Caum Aregay, Jesús; Arasa Marti, Jose; Royo Royo, Santiago; Ares Rodríguez, Miguel (2012-02-15)
    Article
    Open Access
  • Development of a new multispectral imaging system consisting of a liquid crystal tunable filter 

    García Rodríguez, Raquel (Universitat Politècnica de Catalunya, 2013-09-05)
    Master thesis
    Open Access
    [ANGLÈS] The aim of this study was to develop a new portable multispectral system basically composed of a monochrome digital camera, a liquid crystal tunable filter (LCTF) and a laptop. The system had a high spatial ...
  • Electronically tunable switch-mode high-efficiency adaptive band-pass filters for energy harvesting applications 

    Gomez Cid-Fuentes, Raül; Martínez García, Herminio; Poveda López, Alberto; Alarcón Cot, Eduardo José (Institute of Electrical and Electronics Engineers (IEEE), 2012)
    Conference report
    Restricted access - publisher's policy
    Wireless Sensor Networks (WSN) present a pending challenge for a complete deployability due to energy requirements. The Self-Powered WSN approach aims to extend the sensor node life by means of Energy Harvesting. The ...
  • Error bound of the multilevel adaptive cross approximation (MLACA) 

    Chen, Xinlei; Gu, Changqing; Heldring, Alexander; Li, Zhuo; Cao, Qunsheng (2016-01)
    Article
    Open Access
    An error bound of the multilevel adaptive cross approximation (MLACA 1, which is a multilevel version of the adaptive cross approximation-singular value decomposition (ACA-SVD), is rigorously derived. For compressing an ...
  • Reducing false positives in network applications with adaptive cuckoo filters 

    Reviriego, Pedro (2017-06)
    Audiovisual
    Open Access
    Tutorial impartit dins del marc del 2nd International Workshop on Elastic Networks Design and Optimisation (ELASTICNETS 2017).