Enviaments recents

  • Análisis de un modelo de radiocanal aeronáutico para la banda de 40 Ghz 

    Ulloa Vásquez, Fernando; Delgado Penin, José A. (Universidad de Zaragoza. URSI, 2000)
    Text en actes de congrés
    Accés obert
    En esta comunicación se lleva a cabo un primer análisis de un modelo de radio canal aeronáutico para comunicaciones entre estaciones embarcadas en aeronaves (plataformas estratosféricas) y estaciones terrestres fijas. La ...
  • Performance evaluation of space-time block coding using a realistic mobile radio channel 

    Carrasco Espinosa, Héctor; Delgado Penin, José A.; Rodríguez Fonollosa, Javier (Institute of Electrical and Electronics Engineers (IEEE), 2000)
    Text en actes de congrés
    Accés obert
    This paper presents a performance evaluation of space-time block coding (STBC) employing a realistic mobile radio channel model in macrocellular and urban environments. The bit error rate (BER) is computed by Monte-Carlo ...
  • Error correcting neural networks for channels with gaussian noise 

    Ortuño, I.; Ortuño, M.; Delgado Penin, José A. (IEEE AND INN SOCS. 1992 IEEE, 1992)
    Text en actes de congrés
    Accés obert
    The main features of error correcting codes and standard decoding techniques are reviewed. Feedforward neural networks for soft-decision decoding of block codes in channels with additive white Gaussian noise are presented. ...
  • Estudio de la congestion en subcanales HF en un enlace entre Madrid y Barcelona 

    Valle Alarcón, Rafael; Serrat Fernández, Juan; Delgado Penin, José A. (1991)
    Text en actes de congrés
    Accés obert
    We have presented here the result of an investigation done during a year measuring the
  • A Real time simulation model for Lognormal Fading channels 

    Delgado Penin, José A.; Serrat Fernández, Juan (1991)
    Text en actes de congrés
    Accés obert
    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 A.; Serrat Fernández, Juan (1991)
    Text en actes de congrés
    Accés obert
    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 A. (1991)
    Text en actes de congrés
    Accés obert
    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 A. (1991)
    Text en actes de congrés
    Accés obert
    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 ...
  • 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 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 ...

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