Analise de Desempenho e ´ Consumo de Energia da Fusão de Informações de Sensoriamento Espectral

Abstract

In addition to traditional performance metrics in the context of spectrum sensing in cognitive radio networks, energy consumption has received a lot of attention, as it is a limited resource. In this document, the performance of spectrum sensing based on the energy detector and also the energy consumption of the network is analyzed in three cooperative sensing modes: data fusion, decision fusion and hybrid fusion. The presented computer simulation results make use of a realistic model in terms of the location and mobility of the terminals, and of the cluster formation rule in the hybrid fusion mode. Firstly, a mobility mode with uniform distribution is used for performance analysis and energy consumption. Then, a model that aims to simulate the mobility of a real terminal was adapted to a circular area to perform the analyses considered in the uniform model. For the formation of clusters, a method is adopted that takes into account the positioning of the mobile terminals, aiming it improving the energy consumption.