Simulation of Probability of False Alarm and Probability of Detection Using Energy Detection in Coginitive Radio

The rapid growth of wireless devices and application has contributed to huge demand for licensed and unlicensed frequency spectrum. However, recent studies exhibits that restricted spectrum assignment policy results in congestion for spectrum utilization under which considerable portion of the licensed spectrum is severely under-utilized. To address this problem, Cognitive radio is a paradigm for wireless communication in which network or a node changes its transmission and receiver parameters in order to communicate effectively and avoiding interference with licensed or unlicensed user. The main function of each Cognitive Radio User in CR network is to identify primary licensed user. This is attained by sensing RF environment and a process called Spectrum sensing Algorithm. In this paper the simulation of probability of false alarm and probability of detection is discussed.