Now showing items 1-20 of 113

  • A belief-based decision-making framework for spectrum selection in cognitive radio networks 

    Pérez Romero, Jordi; Raschellà, Alessandro; Sallent Roig, José Oriol; Umbert Juliana, Anna (2015-12-17)
    Article
    Open Access
    This paper presents a comprehensive cognitive management framework for spectrum selection in cognitive radio networks. The framework uses a belief vector concept as a means to predict the interference affecting the different ...
  • A cognitive management framework for spectrum selection 

    Bouali, Faouzi; Sallent Roig, José Oriol; Pérez Romero, Jordi; Agustí Comes, Ramon (2013-10-04)
    Article
    Restricted access - publisher's policy
    To increase cognitive radio (CR) operation efficiency, there has been an interest in enhancing the awareness level of spectrum utilization. In this context, this paper builds a new cognitive management functional architecture ...
  • 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
    Restricted access - publisher's policy
    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 ...
  • A framework for multidimensional modelling of spectrum occupancy in the simulation of cognitive radio systems 

    López Benitez, Miguel; Casadevall Palacio, Fernando José (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    Spectrum models play a key role in the research of Dynamic Spectrum Access/Cognitive Radio (DSA/CR) systems. Models existing to date are able to characterise the statistical properties of spectrum occupancy in only one ...
  • An agent-based simulation model of a market for dynamic spectrum access 

    López Berga, Ester; Murcia, César; Beltran, Fernando (2011)
    Conference report
    Restricted access - publisher's policy
    The dramatic increase in the demand for spectrum-based services and devices, combined with the long-term exclusive model of spectrum management, has led to an apparent spectrum scarcity. To overcome this scarcity, the ...
  • Análisis y caracterización de la ocupación espectral en entornos urbanos exteriores e interiores en el contexto de redes Cognitive Radio de acceso dinámico al espectro 

    Molina Corbacho, Susana (Universitat Politècnica de Catalunya, 2009-07-23)
    Master thesis (pre-Bologna period)
    Open Access
    La tecnología Cognitive Radio se ha identificado recientemente como una prometedora solución al denominado problema de escasez de espectro, es decir, la creciente demanda de espectro y su actual infrautilización. La idea ...
  • A new cross-layer attack to TCP in cognitive radio networks 

    León Abarca, Olga; Hernández Serrano, Juan; Soriano Ibáñez, Miguel (2009)
    Conference report
    Restricted access - publisher's policy
  • An experimental assessment of channel selection in cognitive radio networks 

    Umbert Juliana, Anna; Sallent Roig, José Oriol; Pérez Romero, Jordi; Sánchez González, Juan; Collins, Diarmuid; Kist, Maicon (Springer, 2018)
    Conference report
    Open Access
    The management of future networks is expected to fully exploit cognitive capabilities that embrace knowledge and intelligence, increasing the degree of automation, making the network more self-autonomous and enabling a ...
  • An opportunistic cognitive radio communication through the exploitation of the small-scale fading mechanisms of the LTE mobile channel 

    Medina Acosta, Gerardo Agni; Delgado Penin, José Antonio; Haneda, Katsuyuki (2013)
    Article
    Open Access
    In recent years, the cognitive radio technology has attracted the attention of all the players in the telecommunication field (i.e., researchers, industry, service providers, and regulatory agencies) as a way of facing the ...
  • A radio spectrum measurement platform for spectrum surveying in cognitive radio 

    López Benítez, Miguel; Casadevall Palacio, Fernando José (2011)
    Conference report
    Restricted access - publisher's policy
    This paper presents a sophisticated radio spectrum measurement platform specifically envisaged and designed for spectrum occupancy surveys in the context of Dynamic Spectrum Access/Cognitive Radio (DSA/CR). The presented ...
  • Automatic computing resource awareness in resource managers for cognitive radios 

    Gómez Miguelez, Ismael; Marojevic, Vuk; Gelonch Bosch, Antonio José (2010)
    Conference report
    Open Access
    With all the potential flexibility of software-defined radios, the flexibility of SDR terminals is currently limited to design time flexibility. The capacity of the platform in terms of processing resources and internal ...
  • Automation Platform for Radio Spectrum Measures 

    Ros Fornells, Oriol (Universitat Politècnica de Catalunya, 2014-06)
    Bachelor thesis
    Open Access
    [ANGLÈS] Spectrum analyzers are one of the most powerful equipment to study radio communications systems. Nowadays, due to the expansion of these systems with the consequent growth of traffic demand it is basic to study ...
  • Autonomous functionalities for cognitive radio 

    Kalliojarvi, Kari; Acar, Guray; Patouni, Eleni; Stavroulaki, Vera; Pérez Romero, Jordi (2009)
    Conference lecture
    Open Access
    This paper provides an overview on the research activities in autonomous functionalities for cognitive radio and networks, carried out in FP7/E3-project. The identified main research areas within this topic include ...
  • Candidate spectral estimation for cognitive radio 

    Rojas, Miguel A.; Lagunas Hernandez, Miguel A.; Pérez Neira, Ana Isabel (2007)
    Conference report
    Open Access
    Introducing a different view point of traditional filter bank approach for spectral estimation it is derived a spectral estimation method able to detect a given spectral shape forming part or contributing to a given data ...
  • Caracterización indoor y ampliación de un rem (radio enviroment map) en el campus nord de la UPC 

    Mendes Gonçalves, Dayana Fátima (Universitat Politècnica de Catalunya, 2015-02)
    Master thesis (pre-Bologna period)
    Open Access
    [ANGLÈS] Currently the radio spectrum is almost entirely assigned or licensed to different operators. However, from the rise of wireless technologies in the last decade, different studies conducted independently in different ...
  • Characterization and exploitation of heterogeneous OFDM primary users in cognitive radio networks 

    Vizziello, Anna; Akyildiz, Ian F.; Agustí Comes, Ramon; Favalli, Lorenzo; Savazzi, Pietro (2013-08)
    Article
    Restricted access - publisher's policy
  • Characterizing WLAN channel occupancy for cognitive networking 

    Vizcaino Luna, Alexandre (Universitat Politècnica de Catalunya, 2012-07-30)
    Master thesis
    Open Access
    The deployment of heterogeneous wireless networks in the same spectrum space introduces the need for dynamic spectrum access so as to increase the utilization of the available wireless resources. Dynamic spectrum access ...
  • Cognitive control channels: from concept to identification of implementation options 

    Stavroulaki, Vera; Tsagkaris, Kostas; Demestichas, Panagiotis; Gebert, Jens; Mueck, Markus; Schmidt, Andreas; Ferrús Ferré, Ramón Antonio; Sallent Roig, José Oriol; Filo, Marcin; Mouton, Christian; Rakotoharison, Lanto (2012-07)
    Article
    Restricted access - publisher's policy
    Recent effort related to cognitive radio systems has lead to an in-depth analysis of context information management and exploitation based on a cognitive control channel for enhancement of management needed for, ...
  • Cognitive radio resource management exploiting heterogeneous primary users and a radio environment map database 

    Vizziello, Anna; Akyildiz, Ian F.; Agustí Comes, Ramon; Favalli, Lorenzo; Savazzi, Pietro (2013-08)
    Article
    Restricted access - publisher's policy
    The efficient utilization of radio resources is a fundamental issue in cognitive radio (CR) networks. Thus, a novel cognitive radio resource management (RRM) is proposed to improve the spectrum utilization efficiency. ...
  • Cognitive resource management: for all wireless access layers 

    Marojevic, Vuk; Gómez Miguelez, Ismael; Gelonch Bosch, Antonio José (2012)
    Article
    Restricted access - publisher's policy