Ara es mostren els items 68-87 de 106

    • Multi look-up table FPGA implementation of an adaptive digital predistorter for linearizing RF power amplifiers with memory effects 

      Gilabert Pinal, Pere Lluís; Cesari Bohigas, Albert; Montoro López, Gabriel; Bertran Albertí, Eduardo; Dilhac, Jean Marie (Institute of Electrical and Electronics Engineers (IEEE), 2008-02)
      Article
      Accés obert
      This paper presents a hardware implementation of a digital predistorter (DPD) for linearizing RF power amplifiers (PAs) for wideband applications. The proposed predistortion linearizer is based on a nonlinear auto-regressive ...
    • Multi-dimensional LUT-based digital predistorter for concurrent dual-band envelope tracking power amplifier linearization 

      Pham, Thi Quynh Anh; López Bueno, David; Wang, Teng; Montoro López, Gabriel; Gilabert Pinal, Pere Lluís (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Comunicació de congrés
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      This paper presents a multi lookup table (LUT) implementation scheme for the 3D distributed memory polynomial (3D-DMP) behavioral model used in Digital Predistortion (DPD) linearization for concurrent dual-band envelope ...
    • Multiple lookup table predistortion for adaptive modulation 

      Gilabert Pinal, Pere Lluís; Bertran Albertí, Eduardo; Montoro López, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2005-12)
      Article
      Accés obert
      This paper presents a multiple LUT digital adaptive predistorter based on a Hammerstein model that uses the return channel to feed back information from the receiver, concretely the bit error rate (BER), in order to ...
    • On PAPR for combined modulation and access techniques in configurable radio 

      Bertran Albertí, Eduardo; Porta, Oriol; Montoro López, Gabriel; Delgado Penin, José Antonio (2010)
      Text en actes de congrés
      Accés obert
    • On passive bias networks for drain-modulated power amplifiers 

      Bertran Albertí, Eduardo; García García, José Angel; Montoro López, Gabriel; Gilabert Pinal, Pere Lluís; Berenguer Sau, Jordi (MACMILLAN PUBLISHERS LIMITED, 2009-12-16)
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    • On the Wiener and Hammerstein models for power amplifier predistortion 

      Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Bertran Albertí, Eduardo (Institute of Electrical and Electronics Engineers (IEEE), 2005-12)
      Text en actes de congrés
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      This paper presents a comparative study on the suitability of using Hammerstein or Wiener models to identify the power amplifier (PA) nonlinear behavior considering memory effects. This comparative takes into account ...
    • Order reduction of wideband digital predistorters using principal component analysis 

      Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; López Bueno, David; Bartzoudis, Nikolaos; Bertran Albertí, Eduardo; Payaró Llisterri, Miquel; Hourtane, Alain (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      This paper presents how to apply order reduction in wide-band digital predistortion (DPD) linearizers using the principal component analysis (PCA) technique. This method is tested in a wireless backhauling transmitter ...
    • Partial least squares identification of multi look-up table digital predistorters for concurrent dual-band envelope tracking power amplifiers 

      Pham, Thi Quynh Anh; López Bueno, David; Wang, Teng; Montoro López, Gabriel; Gilabert Pinal, Pere Lluís (IEEE Microwave Theory and Techniques Society, 2018-08-02)
      Article
      Accés obert
      This paper presents a technique to estimate the coefficients of a multiple-look-up table (LUT) digital predistortion (DPD) architecture based on the partial least-squares (PLS) regression method. The proposed 3-D distributed ...
    • Peak cancellation and digital predistortion of high-order QAM wideband signals for next generation wireless backhaul equipment 

      López Bueno, David; Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Bartzoudis, Nikolaos (2014)
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      This paper evaluates the linearity performance in a wideband wireless backhaul transmitter when applying crest factor reduction (CFR) and digital predistortion (DPD) techniques to enhance the transmitted output power, and ...
    • Performance analysis of power amplifier back-off levels in UWB transmitters 

      Bertran Albertí, Eduardo; O'Droma, Máirtín; Gilabert Pinal, Pere Lluís; Montoro López, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2007-11)
      Article
      Accés obert
      This paper focuses on the interplay between data throughput and battery duration in UWB units, both of which the most perceptible at the user’ level. The potential benefits of enlarging the power amplifier back-off ...
    • Power amplifier nonlinear modeling for digital predistortion 

      Gilabert Pinal, Pere Lluís; Montoro López, Gabriel (Cambridge University Press, 2011-09-29)
      Capítol de llibre
      Accés restringit per política de l'editorial
    • Prediction of the optimal phase shift between control signals in dual-input power amplifiers 

      Guillena Berenguer, Estefanía; Li, Wantao; Gilabert Pinal, Pere Lluís; Montoro López, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2020)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper evaluates the effect of the phase shift between the two control signals in a dual-input load modulated balanced amplifier (LMBA). While the drain efficiency of the LMBA is not significantly affected by the phase ...
    • Predistorsión digital y adaptativa de amplificadores de RF con modelos de Hammerstein 

      Gilabert Pinal, Pere Lluís; Montoro López, Gabriel (Editorial de la UPV, 2005)
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    • Reconfigurable DPD based on ANNs for wideband load modulated balanced amplifiers under dynamic operation from 1.8 to 2.4 GHz 

      Guillena Berenguer, Estefanía; Li, Wantao; Montoro López, Gabriel; Quaglia, Roberto; Gilabert Pinal, Pere Lluís (IEEE Microwave Theory and Techniques Society, 2021-01-01)
      Article
      Accés obert
      This article proposes a methodology to ensure linear amplification of a load modulated balanced amplifier (LMBA) while keeping the power efficiency as high as possible over a frequency band ranging from 1.8 to 2.4 GHz and ...
    • Reducción de factor de cresta y predistorsión digital de señales QAM de banda ancha para equipos backhaul de próxima generación 

      López Bueno, David; Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Bartzoudis, Nikolaos; Payaró Llisterri, Miquel (Unión Científica Internacional de Radio (URSI), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper evaluates the linearity performance in a wideband wireless backhaul transmitter when applying crest factor reduction (CFR) and digital predistortion (DPD) techniques to enhance the transmitted output power, ...
    • Reducción de la frecuencia de muestreo en los conversores ADC y DAC usados en predistorsionadores digitales 

      Montoro López, Gabriel; Wang, Teng; López Bueno, David; Ruiz, María Nieves; García, José Angel; Gilabert Pinal, Pere Lluís (Unión Científica Internacional de Radio (URSI), 2015)
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      With the increasing demands for higher data rate, wider signal bandwidth is required, and this imposes high sampling rate converters in the communications equipment. This paper provides and analyzes experimental results ...
    • Reducción del orden del modelo de predistorsión digital para amplificadores de potencia mediante la regularización de Ridge 

      Mozos Ruiz, José Miguel; Gilabert Pinal, Pere Lluís; Montoro López, Gabriel (Universidad Autónoma de Madrid, 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper addresses a model order reduction technique based on Ridge’s regression for power amplifier (PA) behavioral models to be used in digital predistortion (DPD) linearization applications. Commonly, the DPD ...
    • Resource management implications and strategies for SDR clouds 

      Gómez Miguelez, Ismael; Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Gelonch Bosch, Antonio José; Marojevic, Vuk (2012-09-19)
      Article
      Accés restringit per política de l'editorial
      This paper analyzes the computing resource management implications of SDR base stations implemented as SDR clouds. SDR clouds describe distributed antennas that connect to a data center for digital signal processing. ...
    • Resource management strategies for SDR clouds 

      Marojevic, Vuk; Gómez Miguelez, Ismael; Gilabert Pinal, Pere Lluís; Montoro López, Gabriel; Gelonch Bosch, Antonio José (2011)
      Text en actes de congrés
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      This paper analyzes different resource management strategies for SDR base stations implemented as SDR clouds. SDR clouds describe distributed antennas that connect to a data center for digital signal processing. The data ...
    • RF and accelerating structure of 12 MeV UPC race-track microtron 

      Koubychine Merkulov, Youri Alexandrovich; Gonzalez, Xavier; Montoro López, Gabriel; Carrillo, David; Garcia-Tabares, Luis; Toral, Fernando; Mathot, Serge Jean; Shvedunov, V.I. (2012)
      Comunicació de congrés
      Accés obert
      We describe the design and technical characteristics of a C-band SW accelerating structure of a 12 MeV race-track microtron, which is under construction at the Technical University of Catalonia, and its RF system with a ...