Método distribuído multiobjetivo de seleção de relays em redes cooperativas sem fio utilizando lógica fuzzy

• Ano de defesa: 2012
• Autor(a) principal: Peron, Guilherme de Santi
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Tecnológica Federal do Paraná; Curitiba; Programa de Pós-Graduação em Engenharia Elétrica e Informática Industrial
• Palavras-chave em Português: Sistemas de comunicação sem fio; Algorítmos; Lógica difusa; Rede de computador - Protocolos; Wireless communication systems; Algorithms; Fuzzy logic; Computer network protocols
• Link de acesso: http://repositorio.utfpr.edu.br/jspui/handle/1/326

In this master thesis we present a new relay selection algorithm using fuzzy logic. The proposed algorithm is distributed, runs independently at each node, not requiring a central entity for coordination, and is multi-objective, since it aims to maximize both network lifetime and end-to-end throughput. The new method takes into account the instantaneous channel state of the relay-destination link and the residual energy of the node battery. As a result, the algorithm assigns a degree of relevance to each relay, such that the with a higher relevance is chosen to forward the source message. Results show that a considerable increase in the network lifetime can be obtained without compromising the end-to-end throughput.