Energy Detection Spectrum Sensing on RTL-SDR based IoT Platform

Abstract

Recent research trends are shifting toward Internet of Things (IoT) networks based on cognitive radio (CR) technology to provide dynamic spectrum access to numerous IoT nodes. Spectrum sensing is an essential task of CR-IoT node which allows cognitive uses to identify vacant frequency bands. In this article we propose a CR-IoT node using Raspberry Pi single board computer and an ultra low cost software defined radio called RTL-SDR. Real time energy detection spectrum sensing is performed on such a CR-IoT node and results are compared to the theory. Results show close correspondence between theoretical and experimental results.