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.
