Jismi Babu, Aswathy Anilkumar Revathy G Nair,. “Spectrum Monitoring In OFDM-Based Cr Networks By Window Based Energy Ratio Algorithm”. International Journal of Engineering and Computer Science 6, no. 4 (April 22, 2017). Accessed April 27, 2024. http://ijecs.in/index.php/ijecs/article/view/3766.