Mestrado em Engenharia Elétrica

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http://repositorio.ufes.br/handle/10/17619

Nível: Mestrado Acadêmico
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Navegando Mestrado em Engenharia Elétrica por Autor "Almeida, Renato Tannure Rotta"

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    Metodologia para o projeto completo de redes ópticas com topologia em hierarquia
    (Universidade Federal do Espírito Santo, 2010-07-26) Lima, Marcelo de Oliveira; Segatto, Marcelo Eduardo Vieira; Almeida, Renato Tannure Rotta; Francês, Carlos Renato Lisboa; Soares, Rosane Bodart
    In this work we present a methodology for logical and physical design of optical networks based on mesh hierarchical topologies. The proposed method can, simultaneously, design the logical and physical topologies, and perform routing and wavelength assignment. It is based on three steps: the metaheuristics, the statistical inference and the model of mixed-integer linear programming. The first one genetic algorithm defines the hierarchical structure of the optical network. Then, a statistical procedure to obtain estimate parameters of interest that will be used to define quality criteria for the project, limiting the model variables for the mathematical programming. We present experimental results in order to validate the efficiency of this formulation on the computational performance and also regarding the quality of solutions, based on comparison of lower bounds for the metrics to be optimized.
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    Relação custo-benefício em redes ópticas hierárquicas
    (Universidade Federal do Espírito Santo, 2011-01-14) Rocha, Renato Silva; Segatto, Marcelo Eduardo Vieira; Oliveira, Elias Silva de; Almeida, Renato Tannure Rotta
    In this work we present a performance analysis of hierarchical optical networks based on two parameters: the blocking probability and financial cost. For the earliest, we have used a discrete event simulator, known as SEDRO. For the latest, two different models are presented in order to compare the trend of each one and evaluate the influence when variations of some parameters of the network occur. We also present the simulations results for the network analysis on various aspects, such as, the number of super nodes and wavelenghts. Therefore, we can analyze the two models, for networks of different sizes and configurations. We have also evaluated the network feasibility, network cost and the impact of some network parameters on its performance