Exploració per tema "Xarxes de ràdio cognitiva"
Ara es mostren els items 14-26 de 26
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Image processing techniques as a support to transmitter positioning determination in cognitive radio networks
(2010)
Text en actes de congrés
Accés obertCognitive 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
(Universitat Politècnica de Catalunya, 2016-03-09)
Projecte/Treball Final de Carrera
Accés obertIn 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
(VDE Conference Publications, 2014)
Text en actes de congrés
Accés restringit per política de l'editorialCognitive 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
(2011)
Text en actes de congrés
Accés restringit per política de l'editorialThe 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
(2011)
Text en actes de congrés
Accés restringit per política de l'editorialThe 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
(2011)
Article
Accés obertCognitive 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
(2011-02-28)
Report de recerca
Accés obertThis 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
(2011-04-30)
Report de recerca
Accés obertWe 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
(2009)
Text en actes de congrés
Accés obertCognitive 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 ... -
Resource Management in Multicarrier Based Cognitive Radio Systems
(Universitat Politècnica de Catalunya, 2012-03-09)
Tesi
Accés obertThe ever-increasing growth of the wireless application and services affirms the importance of the effective usage of the limited radio spectrum. Existing spectrum management policies have led to significant spectrum ... -
Securing cognitive radio networks
(2010-05)
Article
Accés restringit per política de l'editorial -
Spectrum sharing in cognitive radio networks with imperfect sensing: a discrete-time Markov model
(2010-10)
Article
Accés restringit per política de l'editorialAn 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
(Universitat Politècnica de Catalunya, 2011-05-25)
Projecte Final de Màster Oficial
Accés obertThis 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 ...