Now showing items 14-22 of 22

  • Modeling and simulation of joint time-frequency properties of spectrum usage in cognitive radio 

    Casadevall Palacio, Fernando José; López Benítez, Miguel; López Pérez, David Orencio; Vasilakos, Athanasios V. (2011)
    Conference report
    Restricted access - publisher's policy
    The development of the Dynamic Spectrum Access/Cogni- tive Radio (DSA/CR) technology can signi cantly bene t from the availability of realistic models able to accurately capture and reproduce the statistical properties ...
  • Modeling and simulation of time-correlation properties of spectrum use in cognitive radio 

    López Benítez, Miguel; Casadevall Palacio, Fernando José (2011)
    Conference report
    Restricted access - publisher's policy
    The development of the cognitive radio technology can enormously benefit from the availability of realistic and accurate spectrum occupancy models. Time-dimension models of spectrum use proposed in the literature so far ...
  • Modeling the lion attack in cognitive radio networks 

    Hernández Serrano, Juan; León Abarca, Olga; Soriano Ibáñez, Miguel (2011)
    Article
    Open Access
    Cognitive radio is a promising technology aiming to improve the utilization of the radio electromagnetic spectrum. A cognitive radio is a smart device which runs radio applications software to perform signal processing. ...
  • OneFIT functional and system architecture - D2.2 

    Akezidou, Maria; Gebert, Jens; Lange, Christian; Wich, Andreas; Georgakopoulos, Andreas; Demestichas, Panagiotis; Stavroulaki, Vera; Tsagkaris, Kostas; Tzifa, Lia; Schmidt, Andreas; Mueck, Markus; Martin, Oscar; Visiedo, David; Moreno, Oscar; Bantouna, Aimilia; Kritikou, Yiouli; Koutsouris, Nikos; Thomatos, Evangelos; Logothetis, Marios; Mouton, Christian; Tosic, M.; Bender, Paul; Sallent Roig, José Oriol; Boskovic, Dragan; Filo, Marcin; Ferrús Ferré, Ramón Antonio; Mustonen, Miia; Matinmikko, Marja (2011-02-28)
    External research report
    Open Access
    This document presents the OneFIT functional and system architecture for the management and control of infrastructure coordinated opportunistic networks (ONs). The most relevant building blocks "Cognitive management System ...
  • Radio environmental maps: information models and reference model. Document number D4.1 

    Casadevall Palacio, Fernando José; Agustí Comes, Ramon; Pérez Romero, Jordi; López Benítez, Miguel; Grimoud, Sebastien; Sayrac, Berna; Dagres, Ioannis; Polydoros, Andreas; Riihijärvi, Janne; Nasreddine, Jad Nayef; Mähönen, Petri; Gavrilovska, Liljana; Atanasovski, Vladimir; Van de Beek, Jaap (2011-04-30)
    External research report
    Open Access
    We describe herein the envisioned improvements of the REMs due to advanced sensing and processing. In relation to that, we also discuss the underlying modelling assumptions. Finally, we comment on how REMs can be of use ...
  • Reinforcement learning for load management in DiffServ-MPLS mobile networks 

    Vucevic, Nemanja; Pérez Romero, Jordi; Sallent Roig, José Oriol; Agustí Comes, Ramon (2009)
    Conference report
    Open Access
    Cognitive networks are envisaged to provide optimized resource usage in future. While heterogeneity and resource scarcity draw research attention to the wireless part, the rest of the network (mobile backhaul) is rarely ...
  • Securing cognitive radio networks 

    León Abarca, Olga; Hernández Serrano, Juan; Soriano Ibáñez, Miguel (2010-05)
    Article
    Restricted access - publisher's policy
  • Spectrum sharing in cognitive radio networks with imperfect sensing: a discrete-time Markov model 

    Gelabert Doran, Xavier Bernardi; Sallent Roig, José Oriol; Agustí Comes, Ramon; Pérez Romero, Jordi (2010-10)
    Article
    Restricted access - publisher's policy
    An efficient and utmost utilization of currently scarce and underutilized radio spectrum resources has stimulated the introduction of what has been coined Cognitive Radio (CR) access methodologies and implementations. While ...
  • Study of admission and control system in a centralized cognitive radio network for heterogeneous wireless frequency devices 

    Torró Vilert, Albert (Universitat Politècnica de Catalunya, 2011-05-25)
    Master thesis
    Open Access
    This project focuses on the Cognitive Radio Technology initially proposed by Joseph Mitola at the end of 90s. The concept of Cognitive Radio introduces the idea that nowadays telecommunications systems must be aware of the ...