International Journal of Emerging Technology and Advanced Engineering (IJETAE)
Demand of wireless communication is increasing day-by-day; this increasing demand put so many limitations on the use of radio spectrum. Spectrum utilization survey shows that entire spectrum is not used so many times. Because of this radio spectrum is underutilized. This underutilization can be minimized by using Cognitive Radio (CR). Spectrum sensing in cognitive radio helps to find out this underutilized bands of spectrum (spectrum holes). With the help of cognitive radio technology spectrum utilization can be increased efficiently.