Now showing items 13-24 of 95

    • A Real time simulation model for Lognormal Fading channels 

      Delgado Penin, José Antonio; Serrat Fernández, Juan (1991)
      Conference report
      Open Access
      In this paper we present a mathematical model for the simulation of lognormal fading channels. A modeling technique and its validation by computer simulation are described with special emphasis on the aspects related to ...
    • Simulación digital con topsim de un sistema TCM-8PSK con estrategia de recepción inusual 

      Delgado Penin, José Antonio; Serrat Fernández, Juan (1991)
      Conference report
      Open Access
      An 8 state TCM- BPSK system i s analy zed by simulation techniques.It is proposed a system model where trace-back decoding is used.Simulation results using TOPSIM III are presented.The system error rate is evaluated and ...
    • Analisis espectral de codigos adaptativos de longitud variable 

      Delgado Penin, José Antonio (1991)
      Conference report
      Open Access
      The algorithm for the power spectral density of a block code proposed by Cariolaro/Tronca has been used to obtain continuous and discrete spectra components of line codes .Novel adaptive binary and multilevel codes are ...
    • Analisis del codigo de linea 2blq en bucle de abonado digital con diafonia 

      Delgado Penin, José Antonio (1991)
      Conference report
      Open Access
      The 2BlQ line code is selected to study a digital line transmission system for support of ISDN basic access on 2- wire metallic subscriber .The selection of the line code is conditioned by the problem of the near-end ...
    • Hf modem with multilevel parallel transmission using coding and rice 

      Valle Alarcón, Rafael; Delgado Penin, José Antonio (1989-12)
      Article
      Restricted access - publisher's policy
      We present a parallel modem for 2400 b.p.s. data transmission over high-frequency (h.f.) ionospheric channels. Time-redundancy (convolutional coding) and frequency diversity (parallel transmission with pre-encoding) are ...
    • L’èxit de l’enginyeria...o la crisi de les vocacions! 

      Berenguer Sau, Jordi (Associació Catalana d’Enginyers de Telecomunicació, 2008-12)
      Article
      Restricted access - publisher's policy
    • El Parc Mediterrani de la Tecnologia 

      Berenguer Sau, Jordi (Cambra Oficial de Comerç, Indústria i Navegació de Barcelona, 2009-06)
      Part of book or chapter of book
      Restricted access - publisher's policy
    • El Baix Llobregat: pol aviònic de Catalunya? 

      Berenguer Sau, Jordi (Associació d'Enginyers Industrials de Catalunya (EIC), 2009-09-30)
      Part of book or chapter of book
      Restricted access - publisher's policy
      Et presentem el desè monogràfic que hem preparat des de l’Associació i el Col·legi d’Enginyers Industrials de Catalunya. En aquesta ocasió hem volgut posar el focus d’atenció en un sector molt important per al desenvolupament ...
    • 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)
      Conference report
      Restricted access - publisher's policy
      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 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)
      Conference report
      Restricted access - publisher's policy
      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 ...
    • Control system of a miniature 12 MeV race-track microtron 

      Koubychine Merkulov, Youri Alexandrovich; Blasco Argente, Vicente Pablo; Romero, Juan Antonio; Sánchez, Alexandre; Montoro López, Gabriel; Shvedunov, Vasiliy (2014)
      Conference lecture
      Open Access
      A simple control system has been developed for the commissioning of a compact 12 MeV race-track microtron which is under construction at the Technical University of Catalonia. It is of modular structure and is based ...
    • 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)
      Conference report
      Restricted access - publisher's policy
      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 ...