Performance of Double Threshold Energy Detection in Cooperative-Cognitive Networks over Rayleigh and Rician Fading Channels with Path Loss Effect

Abstract

This paper considers cooperative spectrum sensing in cooperative-cognitive networks with path loss effect. Relays are used for cooperation between Primary User and Cognitive Centre. By using Energy Detection techniques, we figure out the crumbling effect of path loss in cooperative cognitive network. Different scenarios are considered with the introduction of single and multiple relays and detection parameters are found at the Cognitive Centre, i.e., Probability of Detection (Pd), Collision probability (Pc) and unavailable probability (Pua). Monte-Carlo simulations and Maximal Ratio Combining is suggested for the energy detection algorithms over Rayleigh and Rician Fading Channels.