Cognitive radio (CR)
Performance analysis of a cognitive radio contention aware channel selection algorithm
... Abstract—In cognitive radio (CR) networks, due to the ever increasing traffic demands and the limited spectrum resources, it is very likely for several secondary networks (SNs) to coexist and ...
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A cognitive radio based method for improving availability in body sensor networks
... of cognitive radio (CR) technology into BSNs can mitigate such a threat and improve network availability, by allowing network nodes to cooperatively agree on a new radio channel whenever the quality ...
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Systematic construction of common channel hopping rendezvous strategies in cognitive radio networks
... Cognitive radio networks (CRNs) have emerged as a promising paradigm that can solve the shortage of spectrum resources, providing the ability to adapt and opportunistically exploit the spectrum ...allows ...
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Fully Distributed Cooperative Spectrum Sensing for Cognitive Radio Networks
... In order to identify network nodes, we take advantage of the fact that CRNs are suitable for more powerful devices than sensor networks are, so we take a public key infrastructure (PKI) approach to initialize the ...
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A Secure and Anonymous Cooperative Sensing Protocol for Cognitive Radio Networks
... the cognitive radio standard for Wireless Regional Area Networks -WRAN- to detect a new incumbent signal in the network) so it has to be very effi- ...
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Expected time to rendezvous in multi hop cognitive radio networks
... Cognitive radio networks (CRNs) has emerged as a tech- nology that can solve the shortage of the spectrum by oppor- tunistically exploiting ...two cognitive users, also known as Secondary Users ...
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Efficiency improvement of HF communications using cognitive radio principles
... Cognitive Radio principles can be applied to HF communications to make a more efficient use of the extremely scarce spectrum. In this contribution we focus on analyzing the usage of the available channels ...
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Improvement of a fully distributed cooperative spectrum sensing protocol for cognitive radio networks
... Abstract—Spectrum sensing is a key process in the context of Cognitive Radio Networks because the system requires finding white-spaces (portions of spectrum free of their rightful user). Collaborative ...
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Evaluation of Efficiency Techniques for Spectrum Decision Making in Cognitive Radio Wireless Networks
... Abstract – The level of success of spectral decision in cognitive radio networks depends on how good the prediction model of channel usage is in both licensed and unlicensed bands. In this article three ...
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Análisis De Factibilidad Para La Utilización De Cognitive Radio (Radio Cognoscitiva) En Las Radiocomunicaciones Necesarias Para Casos De Emergencia En El Ecuador
... de Cognitive Radio tiene el potencial para actuar por el usuario (como un agente autónomo), realizando ofertas y accediendo al pool para obtener los ...
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HF spectrum activity prediction model based on HMM for cognitive radio applications
... Moreover, while submodels were trained to char- acterise one minute-long observation sequences from available, unavailable or partially available channels, the high-level model was tra[r] ...
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Distributed cognitive radio systems with temperature-interference constraints and overlay scheme
... In the paper, we analyze the properties of the game within the theory of variational inequalities, and provide an algorithm that converges to one Nash Equilibrium of the game.. Finall[r] ...
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Las técnicas Cognitive Radio y Software Defined Radio en las comunicaciones rurales: la recomendación IEEE 802.22
... de radio creciente, tales como la revisión y rediseño del marco re- gulatorio, la reducción de los servicios inalámbricos de difusión, la mejora de los estándares de compresión, ...
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Modelo Neuro Difuso para la Predicción de la Ocupación Espectral
... Hence, cognitive radio (CR) must have the capacity to learn and adapt to the radio environment ...parameters. Cognitive radio has not been detached to this process and has required the ...
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Analysis of Radio communication solutions in small and isolated communities under the IEEE 802.22 standard
... Cognitive Radio Technology (CRT) is considered another possibility to address the rising spectrum shortage. When fully operational, CRT could provide technolo- gies for a variety of applications (rural ...
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Television Activity Detection: A Statistical-Based Opportunistic Spectrum Use Approach-Edición Única
... in Cognitive Radio calls primary users to those devices operating on a certain area which have higher priority (or legacy rights) on the usage of a specific part of the ...have Cognitive Radio ...
86
Cognitive strategies for reducing energy consumption in wireless sensor networks
... simulators, in particular WSNs simulators. There are several WSNs simulators used by researchers when developing their work. For example, NS2 [97] is one of the most well-known simulators together with OMNETT++ [98]. A ...
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Impacto de los mecanismos de handover en la calidad percibida por usuarios de servicios de voz en LTE
... de radio en comparaci´ on con los sistemas pertenecientes a la ...v´ıa Radio (General Packet Radio Service, GPRS) es un sistema basado en la conmutaci´ on de paquetes com´ unmente denominado como de ...
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LEXICOGRAPHY AND COGNITIVE LINGUISTICS: HEBREW METAPHORS FROM A COGNITIVE PERSPECTIVE
... Categories have attributes that provide information about categories. At first glance an attribute may seem similar to a component of meaning. There is an im- portant difference, however. A component of meaning is a ...
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1. Los antecedentes de la radio - LA RADIO
... En la actualidad, si analizas la oferta de las distintas emisoras te será muy fácil comprobar que la utilización de la música no es siempre la misma. Así, si en algunas ocasiones se te brinda la oportunidad de escuchar ...
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