Abstract
Spectrum sensing is one of the highly researched and focused area in cooperative cognitive networks. Energy and Cyclostationary Spectrum detection are the mostly used and efficient spectrum sensing techniques to detect the presence or absence of the primary user and to avoid interference. In this paper, the performance of Energy and Cyclostationary spectrum detection over Rayleigh, Nakagami and Additive White Gaussian Noise (AWGN) channel environment is analyzed by considering cooperative cognitive radio networks using Amplify-and-Forward (AF) relaying scheme. Optimum cognitive relays locations have been considered between Primary Base Station (PBS) and Fusion Center (FC) wherein results have been obtained for probabilities of detection and false alarm. The analysis is made, using Monte Carlo Simulation, for two cognitive relays based cooperative network with Maximal Ration Combining on receiver side.