International Journal of Emerging Technology and Advanced Engineering (IJETAE)
In this paper, the authors evaluate the performance of the energy detection based spectrum sensing technique in noisy and fading environments. Both single user detection and cooperative detection situations were investigated. Closed form solutions for the probabilities of detection and false alarm were derived. Analytical results were verified by numerical computations using Monte Carlo method in MATLAB. The performance of the energy detection technique was evaluated by use of Receiver Operating Characteristics (ROC) curves over AWGN and fading (Rayleigh & Nakagami-m) channels.