Energy Detection Spectrum Sensing Technique in Cognitive Radio over Fading Channels Models

Cognitive Radio (CR) is an embryonic technology which able to increase the spectrum utilization by allowing the CR users to carry unused radio spectrum from primary licensed users or share the spectrum with the primary users without causing the inference by spectrum sensing method. This method is used for sensing the used spectrum, and we focus on the performance of CR users based on spectrum sensing energy detection technique in non-fading (AWGN) channel and fading channel such as Rayleigh, Rician and Nakagami [6]. This paper presents a Simulation comparison of this fading channel in Cooperative and Non-Cooperative spectrum for (Probability of False Alarm) Vs (Probability of Miss Detection). The Cooperative spectrum sensing is based on Hard decision fusion rule (OR-rule, AND –rule and MAJORITY-rule). We compare AWGN, all fading channel and observer that the detection of signal is better in Nakagami then Rayleigh and Rician in OR-rule, but it is also observed that spectrum sensing is better results in Rician when compare to other fading channel.