Communication Systems Planning
Mostrando 37-44 de 44 artigos, teses e dissertações.
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37. 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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38. Factors that describe a successful rural entrepreneur. / Caracterização dos fatores relacionados ao sucesso de um empreendedor rural.
In order to identify the factors that describe a successful rural entrepreneur, three focus groups were conduced with farmers and extension agents of the Wheat Cooperative of Alto Jacui Cotrijal at Não-Me-Toque, Rio Grande do Sul State. Several variables were suggested as playing important roles in explaining why a farmer is considered successful or not,
Publicado em: 2002
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39. CHANNEL ALLOCATION COMPARATIVE ANALYSIS FOR TDMA TECHNOLOGY / ALOCAÇÃO DE CANAIS ANÁLISE COMPARATIVA PARA TECNOLOGIA TDMA
Fixed channel assignment -FCA- brings to the Cellular Communication Systems stability at the cost of the use of frequency planning, leading to low tolerance to traffic variability. Dynamic channel assignment -DCA- algorithms have been proposed by several authors in order to minimize these problems,incorporating flexibility to the system with respect to chann
Publicado em: 2002
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40. COVERAGE CALCULATION OF WLL AND LMDS SYSTEMS / CÁLCULO DE COBERTURA DE SISTEMAS WLL E LMDS
A very important aspect that must be considered in the dimensioning and planning of a cellular mobile and acess radio communication systems is the coverage prediction. The technical literaute several methods of calculations have been proposed. The coverage calculation of wireless systems, and its optimization, require the development of computer programs, th
Publicado em: 2000
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41. Modelagem de dados para planejamento e gestão operacional de transportes. / Data modeling for transportation planning and operations management.
The integration of urban transportation systems management activities, at all levels, pertaining one entity, is highly desirable. Integration across entities is also important when their plans or transportation systems overlap, as usually happens in urban agglomerations. In order to achieve consistent plans among these entities, information must be shared. T
Publicado em: 1999
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42. Command part structuration of manufacturing automation system with emphasis in supervisory system / Estruturação da parte de comando de um sistema automatizado de produção com enfase na implementação de um sistema de supervisão
This work presents a study of automation relative to process planning, monitoring of machines and equipment, material flux, supervision of the system and communication network. In this work are developed programs to monitoring machines and equipments. Algorithms and solutions to the use of interfaces are presented and implemented, utilizing a microcomputer a
Publicado em: 1995
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43. SISTEMAS MODERNOS DE COMUNICAÇÕES: FIBRA ÓTICA E RÁDIO DIGITAL / MODERN COMMUNICATION SYSTEMS: FIBER OPTICS AND DIGITAL RADIO
Este trabalho examina os novos sistemas de transmissão, fibra ótica e rádio digital, sob o ponto de vista de sistema, procurando discutir métodos e sugerir critérios para o projeto e dimensionamento de enlaces. O trabalho inclui uma abordagem dos conceitos básicos, bem como uma análise de questões operacionais e econômicas existentes na aplicação
Publicado em: 1981
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44. The SUNY biomedical communication network: six years of progress in on-line bibiographic retrieval.
The SUNY Biomedical Communication Network became operational in 1968 as the first on-line bibliograhpic retrieval service for biomedical literature. Since 1968, the SUNY/BCN has grown in size from nine to thirty-two medical and university libraries and has expanded its data base coverage to include the ERIC and Psychological Abstracts data bases in addition