Cellular Network Planning
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Planejamento e gerenciamento de recursos para redes IEEE 802.16 baseadas em rádio sobre fibra / Resource planning and management for IEEE 802.16 networks based on radio over fiber
The Radio over Fiber technology allows the reduction of the cost of installation and maintenance of wireless access networks, since it can allow an optimized use of radio frequency (RF). Moreover, it employs simplified and inexpensive antennas. The IEEE 802.16 wireless networks, known as WiMAX, are low cost solutions for the last mile access to the Internet.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/06/2011
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2. COVERAGE AND CAPACITY PLANNING OF LTE BROADBAND ACCESS NETWORKS / PLANEJAMENTO DE COBERTURA E CAPACIDADE DE REDES DE ACESSO EM BANDA LARGA COM TECNOLOGIA LTE
At the moment, the cellular networks are being used as an option to provide broadband services in places that have not yet been covered by the fixed networks, mainly in underdeveloped countries like Brazil. The employed technologies now in Brazil, GSM (Global System is Mobile) and UMTS (Mobile Universal Telecommunications System), they were not developed to
Publicado em: 2010
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3. Análise de Handover inter e intra-célula em um sistema de telefonia celular através de método de medição simplificado
This dissertation has the purpose to present a portable device named PlugData MG100G, equipped with a cellular module, to analyze the radiofrequency coverage in a GSM network situated in João Pessoa city, state of Paraíba, at four distinct regions. The equipment, originally, was developed to be used in fixed environments, so it was adapted so that it could
Publicado em: 2009
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4. Uma arquitetura para otimização do acesso em redes em malha sem fio
Wireless mesh networks are dynamically self-organized and self-configured, with the nodes in the network automatically establishing and maintaining mesh connectivity among themselves. Wireless mesh networks consist of three types of nodes: clients, routers and gateways. Routers have minimal or no mobility. Routers form the backbone of mesh networks. Multi-ho
Publicado em: 2008
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5. ESTUDO DE PROPAGAÇÃO EM AMBIENTES FECHADOS PARA O PLANEJAMENTO DE WLANS / INDOOR PROPAGATION STUDIES FOR WLAN PLANNING
Recently, an explosive growth in the use of Wireless Local Area Networks - WLANs, using restricted radiation levels and operating in license exempted frequency bands, has been observed, not only for corporative domestic use but also to provide paid internet access in public environments such as airports, hotels, convention centers, university campus and even
Publicado em: 2004
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6. MÉTODOS DE PLANEJAMENTO DE SISTEMAS CELULARES WCDMA / METHODS FOR WCDMA SYSTEMS PLANNING
This work presents a detailed study of planning tecniques for third generation WCDMA cellular systems. At first a theoretical study of the WCDMA system is presented, including the structure of the air interface and the various channel types in the downlink and uplink. Following, network planning techniques are presented, with a detailed analysis of the link
Publicado em: 2003
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7. DEVELOPMENT OF A SIMULATION TOOL FOR CELLULAR NETWORK PLANNING AND PERFORMANCE EVALUATION BASED ON THE SIGNALING LOAD / DESENVOLVIMENTO DE UMA FERRAMENTA DESIMULAÇÃO PARA PLANEJAMENTO E ANÁLISE DO DESEMPENHO DE REDES CELULARES A PARTIR DA CARGA DE SINALIZAÇÃO GERADA
The advent of second and third generation cellular systems make cellular operators face dramatic increase in the signaling traffic over the fixed part of the mobile network. In spite of this, rare mobile communications service providers are able to forecast the above mention increase and quantify it with reasonable precision. This work describes the developm
Publicado em: 2002
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8. PLANEJAMENTO DE COBERTURA DE SISTEMAS GSM COM USO DE REPETIDORES / GSM COVERAGE SYSTEM PLANNING WITH REPEATERS
This work deals with the use of active repeaters in the planning and deployment of cellular mobile systems. This technique allows the extension of the coverage of the cellular systems, with low cost and short building time, to areas where the use of radio base stations would be costly or difficult to implement.The impact of the inclusion of the active elemen
Publicado em: 2002
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9. Synaptic mechanisms of persistent reverberatory activity in neuronal networks
For brain functions such as working memory and motor planning, neuronal circuits are able to sustain persistent activity after transient inputs. Theoretical studies have suggested that persistent activity can exist in recurrently connected networks as active reverberation. However, the actual cellular processes underlying such reverberation are not well unde
National Academy of Sciences.