Enviaments recents

  • Analysis of diversity and equalization techniques applied to M-QAM digital mobile radio systems 

    Valdominos Bardají, Antonio; Casadevall Palacio, Fernando José (Institute of Electrical and Electronics Engineers (IEEE), 1994)
    Text en actes de congrés
    Accés obert
    Presents an investigation of diversity and/or equalization techniques applied to 4 and 16-QAM TDMA radio systems for rapid fading dispersive channels. In particular, typical urban (TU) environments have been considered. A ...
  • Average power prediction in microcells 

    Ruiz Boqué, Sílvia; Fernández, M (Institute of Electrical and Electronics Engineers (IEEE), 1994)
    Text en actes de congrés
    Accés obert
    A propagation model to estimate the average received power in an urban microcell environment has been developed. This model can be used both in line of sight (LOS) and non line of sight (NLOS) conditions in any regular or ...
  • Towards transnational interoperable PPDR communications: the European ISI cloud network 

    Ferrús Ferré, Ramón Antonio; Sallent Roig, José Oriol; Aabye, Kirsten; Rashed, Aladdin; Olivieri, Claudia; Pangallo, Franco; Proietti, Debora (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Text en actes de congrés
    Accés obert
    The European Council has been stressing the need for interoperability among technologies used for Public Protection and Disaster Relief (PPDR) communications across Europe for a long time. Nevertheless, while the introduction ...
  • Security in transnational interoperable PPDR communications: threats and requirements 

    Ferrús Ferré, Ramón Antonio; Sallent Roig, José Oriol; Verkoelen, Cor; Fransen, Frank; Saijonmaa, Jaakko; Olivieri, Claudia; Duits, Michel; Galin, Anita; Pangallo, Franco; Proietti, Debora (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Text en actes de congrés
    Accés obert
    The relevance of cross border security operations has been identified as a priority at European level for a long time. A European network where Public Protection and Disaster Relief (PPDR) forces share communications ...
  • A fittingness factor-based spectrum management framework for cognitive radio networks 

    Bouali, Faouzi; Sallent Roig, José Oriol; Pérez Romero, Jordi; Agustí Comes, Ramon (2013-03)
    Article
    Accés restringit per política de l'editorial
    In order to increase cognitive radios (CRs) operation efficiency, there has been an increasing interest in strengthening awareness level about spectrum utilisation. In this respect, this paper proposes to exploit the ...
  • Emulador de canales radio para sistemas de comunicaciones móviles 

    Umbert Juliana, Anna; Díaz Romero, M. del Pilar (2000)
    Text en actes de congrés
    Accés obert
  • Red de acceso radio para el sistema de comunicaciones móviles de tercera generación (UMTS) 

    Umbert Juliana, Anna; Díaz Romero, M. del Pilar (ETSETB UPC, 2000)
    Text en actes de congrés
    Accés obert
    Una de las principales actividades que actualmente se están realizando en el mundo de las telecomunicaciones es la estandarización del sistema de comunicaciones móviles de tercera generación. Puesto que el futuro sistema ...
  • Up-link performance of the DQRUMA MAC protocol in a realistic indoor environment for W-ATM networks 

    Verikoukis, Christos; Olmos Bonafé, Juan José (Institute of Electrical and Electronics Engineers (IEEE), 2000)
    Text en actes de congrés
    Accés obert
    This paper evaluates by simulation the performance of the distributed queuing request update multiple access (DQRUMA) MAC protocol in a realistic indoor environment. This protocol has been simulated in conjunction with a ...
  • Alternativas en el desarrollo de aplicaciones para móviles 

    Valenzuela González, José Luis; Sallent Roig, José Oriol; Bodas, J; Fernández, Victor (ETSETB UPC, 2000)
    Text en actes de congrés
    Accés obert
    Cuando se alcanza la etapa de madurez del mercado GSM, como sería el caso de España, se impulsan nuevos servicios y aplicaciones para móviles, cuyo desarrollo puede fundamentarse en diversas tecnologías. En esta comunicación ...
  • A radio channel emulator for WCDMA, based on the hidden Markov model (HMM) 

    Umbert Juliana, Anna; Díaz Romero, M. del Pilar (Institute of Electrical and Electronics Engineers (IEEE), 2000)
    Text en actes de congrés
    Accés obert
    One of the main development and research subjects within the telecommunications area activity is the 3G mobile systems standardisation. The radio access is, of course, the main trouble in mobile systems, so it is important ...

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