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Evitando Interferências Primárias em Redes Ad Hoc com Antenas Direcionais

Italo RamellaJosé Ferreira de Rezende

Abstract. Interference is a big problem on the performance of ad hoc networks.Recent researches suggest the use of directional antennas as a way to reduce the interference and provide greater spatial reuse and better connectivity. This paper classifies interference as primary and secondary and shows that the primary one may be avoided whenever a minimum number of beams (N m) is used. The very same result can be obtained with an inferior number of beams if some special conditions are respected. These results allow us to elaborate a set of rules to be followed to avoid the primary interference in ad hoc scenarios. Some simulations showed that the application of those rules eliminates the primary interference and improves the network performance up to 70%.

http://www.lbd.dcc.ufmg.br:8080/colecoes/sbrc/2006/st1_4.pdf

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