International Journal of Engineering Research and Applications (IJERA)
The need for radio spectrum usage is increasing day-by-day with recent advancements in wireless system. But there is limited amount of spectrum available. So that for solving this problem Cognitive Radio (CR) is used for purpose of the spectrum utilization properly. Basically the Licensed users use the licensed bands but the unlicensed users should always check spectrum with the help of CR technology. The main aim of cognitive radio is to sense the spectrum continuously. In this paper, the authors have provided the proposal that how the capacity of the system can be increased by reuse the unused licensed band by simulating a cognitive radio system.