Ara es mostren els items 5-24 de 24

  • DI5.3.- Vision Book (NEWCOM++) 

    Polydoros, Andreas; Pérez Romero, Jordi; Benedetto, Sergio; Bogucka, Hanna; Corazza, Giovanni E.; Correia, Luis; Duhamel, Pierre; Koutsopoulos, Iordanis; Noguet, Dominique; Palazzo, Sergio (2011-03)
    Report de recerca
    Accés obert
    This Report constitutes the final version of the NEWCOM++ Vision Book. In it, the community of NEWCOM++ researchers, shaped under the common ground of a mainly academic network of excellence, have tried to distil their ...
  • Diseño e implementación de una metodología para representar White Spaces con una herramienta de planificación de radiofrecuencia 

    León Gutiérrez, Juan Carlos (Universitat Politècnica de Catalunya, 2012-03-09)
    Projecte/Treball Final de Carrera
    Accés obert
    [ANGLÈS] Static spectrum allocation policies for long periods over large geographical regions and the growth of wireless systems have led to an apparent saturation of the same. An important number of spectrum measurement ...
  • Disseny i anàlisi de xarxes cognitives amb terminals auto-recarregables 

    Fernández Carballo, Sara (Universitat Politècnica de Catalunya, 2015-10-27)
    Treball Final de Grau
    Accés obert
    This project is done as Final Science and Telecommunications Technologies Degree Project. The aim is to propose, implement and expose a telecommunications project. It analyzes three simulated scenarios of a main network ...
  • DR9.3 Final report of the JRRM and ASM activities 

    Debbah, Merouane; Kliks, Adrian; Moy, Christophe; Palicot, Jacques; Jouini, Wassim; Casadevall Palacio, Fernando José; Umbert Juliana, Anna; López Benítez, Miguel; Pérez Romero, Jordi; Serrador, António; Caeiro, Luisa; Correia, Luis; Moretti, Marco; Bezerra Rodrigues, Emanuel; Sroka, Pawel; Bogucka, Hanna (2010-12)
    Report de recerca
    Accés obert
    This deliverable provides the final report with the summary of the activities carried out in NEWCOM++ WPR9, with a particular focus on those obtained during the last year. They address on the one hand RRM and JRRM strategies ...
  • ETSI reconfigurable radio systems – software defined radio and cognitive radio standards 

    Ahtiainen, Ari; Casadevall Palacio, Fernando José; Sallent Roig, José Oriol; Pérez Romero, Jordi; Mueck, Markus; Dimitrakopoulos, George; Tsagkaris, Kostas; Gebert, Jens; Nolte, Klaus; Filin, Stanislav; Harada, Hiroshi; Baldini, Gianmarco (2009)
    Text en actes de congrés
    Accés obert
    This paper details the current work status of the ETSI Reconfigurable Radio Systems (RRS) Technical Committee (TC) and gives an outlook on the future evolution. In particular, Software Defined Radio (SDR) related study ...
  • ETSI reconfigurable radio systems: status and future directions on software defined radio and cognitive radio standards 

    Sallent Roig, José Oriol; Mueck, Markus; Piiponen, Antti; Kalliojarvi, Kari; Dimitrakopoulos, George; Tsagkaris, Kostas; Demestichas, Panagiotis; Casadevall Palacio, Fernando José; Pérez Romero, Jordi; Kandeepan, Sithamparanathan; Street, Michael; Bender, Paul; Deschamps, Benoist; Gebert, Jens; Haustein, Thomas; Debbah, Merouane; Harada, Hiroshi; Filin, Stanislav; Baldini, Gianmarco; Lota, Jaswinder; Hayar, Aawatif (2010-09)
    Article
    Accés obert
    This article details the current work status of the ETSI Reconfigurable Radio Systems Technical Committee, positions the ETSI work with respect to other standards efforts (IEEE 802, IEEE SCC41) as well as the European ...
  • Evaluation of spectrum opportunities in the GSM band 

    Carniani, Andrea; Giupponi, Lorenza; Verdone, Roberto; Pérez Neira, Ana Isabel (2009)
    Text en actes de congrés
    Accés obert
    In this paper we explore the possibility of exploiting underutilized channels in the GSM bands. The secondary (unlicensed) users of the spectrum are the nodes of an overlay cognitive ad-hoc network, which opportunistically ...
  • Exploiting the operating point in sensing-based opportunistic spectrum access scenarios 

    Gelabert Doran, Xavier Bernardi; Sallent Roig, José Oriol; Pérez Romero, Jordi; Agustí Comes, Ramon (2009)
    Comunicació de congrés
    Accés obert
    Spectrum sensing is one key enabler towards opportunistic spectrum access in cognitive radio networks. Such scenarios allow cognitive users (a.k.a. secondary users) to access some licensed spectrum band as long as they do ...
  • Image processing techniques as a support to transmitter positioning determination in cognitive radio networks 

    Bolea, Liliana; Pérez Romero, Jordi; Agustí Comes, Ramon; Sallent Roig, José Oriol (2010)
    Text en actes de congrés
    Accés obert
    Cognitive radio is a new paradigm for wireless communications offering a solution to conciliate the current spectrum demand growth and underutilization without changes to the existing legacy wireless systems. Secondary ...
  • Implementación de terminales de Radio Cognitiva en la banda de TV 

    Perejil Sabaté, Israel (Universitat Politècnica de Catalunya, 2016-03-09)
    Projecte/Treball Final de Carrera
    Accés obert
    In this final project a wireless comunication has been made between two transceivers using a TV White Space (TVWS). The aim is to highlight the main features of Cognitive Radio. For that reason, it has been necessary to ...
  • Low-overhead heuristic algorithms for spectrum sensing in cognitive radio networks 

    Miliotis, Vasileios; Koutsopoulos, Iordanis; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (VDE Conference Publications, 2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Cognitive Radio (CR) has matured as a research field and has the goal to improve the utilization of spectrum. This technology enables a CR user to function in unlicensed or licensed bands without causing interference to ...
  • 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)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    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)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    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
    Accés obert
    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)
    Report de recerca
    Accés obert
    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)
    Report de recerca
    Accés obert
    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)
    Text en actes de congrés
    Accés obert
    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
    Accés restringit per política de l'editorial
  • 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
    Accés restringit per política de l'editorial
    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)
    Projecte Final de Màster Oficial
    Accés obert
    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 ...