Prof D. B. Bobade. “OFDM-Based Based Cognitive Radio Networks for Spectrum Monitoring Using Energy Ratio Algorithm”. International Journal on Future Revolution in Computer Science & Communication Engineering 5, no. 12 (December 31, 2019): 19–22. Accessed April 2, 2023. https://ijfrcsce.org/index.php/ijfrcsce/article/view/2001.