Study and Optimization of Cooperative Spectrum Sensing in OFDM Cognitive Radio Networks

Este trabalho foi desenvolvido no âmbito do curso de Engenharia das Indústrias Agro-Alimentares da Escola Superior Agrária de Viseu na unidade curricular de Seminário

Atendendo a todas as considerações anteriormente mencionadas, no nosso ponto de vista, e salvo o devido respeito, o critério do valor diminuto da vantagem

In this work, a theoretical analysis of the outage probability of AF cooperative diversity OFDM systems with relay selec- tion is developed by taking the nonlinear

This scheme was proposed as a solution to the problem of noise uncertainty, fading and shadowing. This scheme decreases the probabilities of false detection and false

Defined as several and simultaneous ineffectiveness of multiple anticancer drugs with different mechanisms of action due to resistance of target cells, multidrug resistance

Cognitive Radio (CR) is a developing technology to overcome the problem of using the spectrum inefficiently by improving idle spectrum utilization in both temporally and spatially.

CR is an persuasive resolution to the spectral congestion crisis by establishing the opportunistic exploitation of unused frequency bands that are not significantly engaged through

By introducing the trust scheme into the fuzzy logic scheme to represent the reliability of the nodes, a cooperative spectrum sensing scheme based on trust and fuzzy logic for