Ara es mostren els items 1-20 de 26

    • A new cross-layer attack to TCP in cognitive radio networks 

      León Abarca, Olga; Hernández Serrano, Juan; Soriano Ibáñez, Miguel (2009)
      Text en actes de congrés
      Accés restringit per política de l'editorial
    • A radio spectrum measurement platform for spectrum surveying in cognitive radio 

      López Benítez, Miguel; Casadevall Palacio, Fernando José (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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 ...
    • Cognitive management frameworks and spectrum management strategies exploiting cognitive radio paradigm 

      Raschellà, Alessandro (Universitat Politècnica de Catalunya, 2015-05-27)
      Tesi
      Accés obert
      Cognitive Radio (CR) paradigm represents an innovative solution to mitigate the spectrum scarcity problem by enabling Dynamic Spectrum Access (DSA), defined in order to conciliate the existing conflicts between the ...
    • Context discovery mechanisms for cognitive radio 

      Bolea, Liliana; Pérez Romero, Jordi; Agustí Comes, Ramon; Sallent Roig, Oriol (IEEE, 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper addresses the estimation of different context parameters of a primary user network based on signal strength measurements obtained by a sensor network and without any prior knowledge of the antenna types used by ...
    • Cooperation reliability based on reinforcement learning for cognitive radio networks 

      Vucevic, Nemanja; Akyildiz, Ian F.; Pérez Romero, Jordi (2010)
      Text en actes de congrés
      Accés obert
      The primary objective of cooperation in Cognitive Radio (CR) networks is to increase the efficiency and improve the network performance. However, CR users may act destructively and decrease both their own and others’ ...
    • 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, 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, 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, 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, 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, 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 ...