Enviaments recents

  • 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 ...
  • Smart spectrum technologies for mobile information systems 

    López Benítez, Miguel; Lehtomaki, Janne; Umebayashi, Kenta; Casadevall Palacio, Fernando José (2016-07-31)
    Article
    Accés obert
  • SDN/NFV-enabled satellite communications networks: opportunities, scenarios and challenges 

    Ferrús Ferré, Ramón Antonio; Koumaras, Harilaos; Sallent Roig, José Oriol; Agapiou, George; Rasheed, Tinku; Boustie, Christelle; Gélard, Patrick; Ahmed, Toufik (Elsevier, 2016-03-01)
    Article
    Accés restringit per política de l'editorial
    In the context of next generation 5G networks, the satellite industry is clearly committed to revisit and revamp the role of satellite communications. As major drivers in the evolution of (terrestrial) fixed and mobile ...
  • Provisión de banda ancha móvil para seguridad pública y emergencias 

    Agustí Comes, Ramon; Sallent Roig, José Oriol; Ferrús Ferré, Ramón Antonio (2013-06-01)
    Article
    Accés obert
    El acceso de banda ancha móvil es fundamental para mejorar la eficiencia y efectividad de las comunicaciones de seguridad pública y emergencias. En este artículo se identifican y argumentan los tres pilares básicos sobre ...
  • Enhancing satellite & terrestrial networks integration through NFV/SDN technologies 

    Ferrús Ferré, Ramón Antonio; Sallent Roig, José Oriol; Rasheed, Tinku; Morelli, Arianna; Koumaras, Harilaos; Agapiou, George; Boustie, Christelle; Gélard, Patrick; Mestari, Rachid; Makis, Haritos; Masson, Thierry (2015-07-01)
    Article
    Accés obert
    NFV and SDN technologies can become key facilitators for the combination of terrestrial and satellite networks. Enabling NFV into the SatCom domain will provide operators with appropriate tools and interfaces in order to ...
  • Alternativas de despliegue y asignación de espectro para las redes radio de emergencia de banda ancha 

    Cerrato, Javier Alonso; Ferrús Ferré, Ramón Antonio; Sallent Roig, José Oriol (2015-07-01)
    Article
    Accés obert
    La definición e implementación de una solución de banda ancha móvil que satisfaga las necesidades operativas de los cuerpos de seguridad pública y de emergencias (PPDR – Public Protection and Disaster Relief) es esencial ...
  • Space-dimension models of spectrum usage for cognitive radio networks 

    López Benítez, Miguel; Casadevall Palacio, Fernando José (2017-01-01)
    Article
    Accés obert
    The dynamic spectrum access (DSA) principle, relying on the cognitive radio (CR) paradigm, allows users to access spectrum over time intervals or spatial areas where it remains unused. Due to the opportunistic nature of ...
  • Average block error probability in the reverse link of a packet ds/cdma system under rayleigh fading channel conditions 

    Pérez Romero, Jordi; Alonso Zárate, Luis Gonzaga; Agustí Comes, Ramon (2000-04)
    Article
    Accés obert
    Analytic expressions have been derived for the probability density functions of the total signal-to-interference ratio when considering mixed-type interference sources in the reverse link of a DS/CDMA packet radio system ...
  • Adaptive s-aloha cdma as an alternative way of integrating services in mobile environments 

    Sallent Roig, José Oriol; Agustí Comes, Ramon (2000-05)
    Article
    Accés obert
    Code-division multiple-access (CDMA) schemes appear to be very promising access techniques for coping with the requirements of third-generation mobile systems, mainly because of their flexibility. This paper proposes an ...
  • Software radio reconfigurable hardware system (share) 

    Revés Ballesté, Xavier; Gelonch Bosch, Antonio José; Casadevall Palacio, Fernando José; Garcia, José L. (2000-08)
    Article
    Accés restringit per política de l'editorial
    Recent requirements and evolution of personal communications systems will tend to increase the number of applications that will run over the same hardware/software. While an option is providing this platform with all the ...

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