SMART SENSOR FOR SPECTRUM OCCUPANCY DETECTION

Internet and communication play a significant role today. The primary can’t use all the frequency they own. Effective communication is improved by identifying the vacant frequency and alerting the secondary user. A design to find the vacant frequency spectrum is presented in this study. The system recognizes the vacant frequency spectrum and alerts the secondary user to it. Spectrum sensing algorithm is based on Energy Detection Method. This theoretical approach finds the frequency spectrum that is not in use. It might lead to certain variations. We have created a system that includes a filter, an amplifier, a demodulator, and other components. LabView is used to implement this. The obtained curve is used as a practical value. The second user is informed via Arduino. This system effectively lowers costs. The design of this system allows for secondary users, such as bands with permits who are temporarily exploited in vacant spaces, to use it to its maximum efficiency and efficacy. Here, the curves derived from theoretical and real-world values are contrasted, and the outcome is shown.