Comparative of Spectrum of spectrum sensing Techniques Energy Detection and matched filter

Abstract

The growing demand of wireless applications has put a lot of constraints on the usage of available radio spectrum which is limited and precious resource. Cognitive radio is a promising technology which provides a novel way to improve utilization efficiency of available electromagnetic spectrum. Spectrum sensing is a technique in which the surrounding radio environment is sensed in order to determine the presence or absence of the licensed user in the licensed band. It enables the CR to get an overview on the radio environment usage and in determining the spectrum holes .spectrum sensing consider is main function in cognitive radio. In this project, studied of some spectrum sensing techniques and analyses performance Energy detector and matched filter in detection probability and false alarm probability their relationships. Used this parameters for performance evaluation between them and design simulation in different scenarios and select best environment when combination of two technique.