S. Hassen, Fadel, and Mohanad E. Okab AL-Madi. 2008. “The Performance of Wavelet Packet Division Multiplexing in Impulsive and Gaussian Noise”. Journal of Engineering and Sustainable Development 12 (4): 115-27. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1650.