Ara es mostren els items 1-20 de 106

    • 3-D distributed memory polynomial behavioral model for concurrent dual-band envelope tracking power amplifier linearization 

      Gilabert Pinal, Pere Lluís; Montoro López, Gabriel (IEEE Microwave Theory and Techniques Society, 2015-02-01)
      Article
      Accés obert
      This paper presents a new 3-D behavioral model to compensate for the nonlinear distortion arising in concurrent dual-band (DB) Envelope Tracking (ET) Power Amplifiers (PAs). The advantage of the proposed 3-D distributed ...
    • 3D digital predistortion for dual-band envelope tracking power amplifiers 

      Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; López Bueno, David; García García, José Ángel (2013)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      This paper proposes a novel three-dimensional digital predistorter (3D-DPD) suitable for compensating nonlinear distortion in dual-band (DB) envelope tracking (ET) power amplifiers (PAs). By taking into account the ...
    • A class of stable nonlinear systems for modelling memory effects in RF power amplifiers 

      Montoro López, Gabriel; Gilabert Pinal, Pere Lluís; Berenguer Sau, Jordi; Bertran Albertí, Eduardo (Escuela Politécnica Superior Ingeniería Gijón, 2006)
      Text en actes de congrés
      Accés obert
    • A dual-band outphasing transmitter using broadband class E power amplifiers 

      Ruiz, Maria Nieves; Marante, Reinel; Rizo, Leysi; García, José Angel; Gilabert Pinal, Pere Lluís; Montoro López, Gabriel (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper, a dual-band outphasing transmitter (able of operating either at 770 MHz or 960 MHz frequency bands) is presented. Two broadband RF power amplifiers (PAs) have been designed over packaged GaN HEMT devices, ...
    • A full FPGA-based implementation of an adaptive digital predistorter 

      Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Bertran Albertí, Eduardo (University California San Diego, 2009)
      Text en actes de congrés
      Accés obert
    • A low-complexity memoryless model for envelope tracking RF power amplifiers 

      Montoro López, Gabriel; Gilabert Pinal, Pere Lluís; García García, José Ángel; Ruiz Lavin, Maria de las nieves; Marante, Reinel (European Microwave Association (EuMA), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper presents a new kind of behavioral model structure for characterizing static nonlinearities in dynamically supplied RF power amplifiers. The proposed architecture is based on the combination of several basic cells ...
    • A method for real-time generation of slew-rate limited envelopes in envelope tracking transmitters 

      Montoro López, Gabriel; Gilabert Pinal, Pere Lluís; Bertran Albertí, Eduardo; Berenguer Sau, Jordi (2010-02)
      Text en actes de congrés
      Accés obert
    • A method for selecting online the coefficients to be updated in a DPD for PA linearization 

      Pham, Thi Quynh Anh; Montoro López, Gabriel; López Bueno, David; Gilabert Pinal, Pere Lluís (2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper presents a technique for selecting onlinethe coefficients to be updated in a digital predistorter (DPD)based on direct learning. The proposed method, which is basedon a combination of matching pursuit (MP) and ...
    • A new digital predictive predistorter for behavioral power amplifier linearization 

      Montoro López, Gabriel; Gilabert Pinal, Pere Lluís; Bertran Albertí, Eduardo; Cesari Bohigas, Albert; Silveira, Daniel D. (Institute of Electrical and Electronics Engineers (IEEE), 2007-06)
      Article
      Accés obert
      This letter presents a new digital adaptive predistorter (PD) for power amplifier (PA) linearization based on a nonlinear auto-regressive moving average (NARMA) structure. The distinctive characteristic of this PD is ...
    • A recursive digital predistorter for linearizing RF power amplifiers with memory effects 

      Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Cesari Bohigas, Albert (2006-12)
      Comunicació de congrés
      Accés obert
      A nonlinear auto-regressive moving average (ARMA) structure capable of compensating nonlinear memory effects in RF power amplifiers is here presented. Results on the linearity improvement, in both in-band and out-of-band ...
    • Active control of vibrant actuators with adaptive adjustment of the reference 

      Bertran Albertí, Eduardo; Montoro López, Gabriel (Fuertes, J.M. (ed.) IEEE, 1999)
      Text en actes de congrés
      Accés obert
      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)
      Text en actes de congrés
      Accés obert
      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 envelope shaping for low and medium power amplifiers with dynamic supply 

      Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Ruiz Lavin, Maria de las Nieves; García Antón, José A. (2016-07-01)
      Article
      Accés obert
      This letter presents an adaptive envelope shaping (AES) method to linearize low and medium power amplifiers (PAs) with dynamic supply. This straightforward linearization solution results very useful for small cell or handset ...
    • Adaptive principal component analysis for online reduced order parameter extraction in PA behavioral modeling and DPD linearization 

      Pham, Thi Quynh Anh; López Bueno, David; Montoro López, Gabriel; Gilabert Pinal, Pere Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper presents a new method, based on the adaptive principal component analysis (APCA) technique, that iteratively creates and updates an orthogonal data matrix used to estimate the parameters of power amplifier (PA) ...
    • Adaptive us-mrac for disturbance cancellation 

      Bertran Albertí, Eduardo; Montoro López, Gabriel (Institution of Electrical Engineers, 1995-01)
      Article
      Accés obert
      A variable structure, model reference adaptive control (VS-MRAC) devoted to cancel interferences without the requirement of an auxiliary input is proposed. This method is an improved alternative to the strategies recently ...
    • Agnostic envelope linearization of dynamically supplied power amplifiers for mobile terminals 

      Li, Wantao; Montoro López, Gabriel; Gilabert Pinal, Pere Lluís (Multidisciplinary Digital Publishing Institute (MDPI), 2022-05-16)
      Article
      Accés obert
      This paper presents an envelope linearization technique to compensate for the nonlinear distortion of envelope tracking (ET) power amplifiers (PAs) for 5G new radio (NR) mobile terminals. The proposed envelope optimization ...
    • Amping up, saving power 

      López Bueno, David; Wang, Teng; Gilabert Pinal, Pere Lluís; Montoro López, Gabriel (2016-01-01)
      Article
      Accés obert
      Fourth-generation (4G) communication systems based on orthogonal frequency division multiplexing (OFDM) and the proposed backwards compatible fifth-generation (5G) variants, like filter-bank multicarrier (FBMC), are based ...
    • An application oriented short course in image recognition 

      Tarrés Ruiz, Francisco; Bertran Albertí, Eduardo; Montoro López, Gabriel; Barbosa de Souza, Alisson (1998)
      Text en actes de congrés
      Accés obert
      An experimental course on Digital Image Processing and Recognition, together with its associated implementation, are described. The program is a user-friendly interface running under Matlab 4.0, which allows easy-control ...
    • An efficient combination of digital predistortion and OFDM clipping for power amplifiers 

      Gilabert Pinal, Pere Lluís; Gadringer, Michael E.; Montoro López, Gabriel; Mayer, M.L.; Silveira, Daniel D.; Bertran Albertí, Eduardo; Magerl, G. (2009-09)
      Article
      Accés restringit per política de l'editorial
    • An experimental course on digital communications 

      Bertran Albertí, Eduardo; Tarrés Ruiz, Francisco; Montoro López, Gabriel (IEEE PRESS, 1998)
      Text en actes de congrés
      Accés obert
      In this paper a laboratory course on digital communications is presented. This course has been designed for medium degree professionals in the telecommunications field, and it is based on training equipment developed to ...