N. Hamarsheh, M. M., M. K. Abdullah, S. Khatun, and H. M. H. Shalaby. “Configuration Design and Performance Analysis of a Fast Frequency Modulation Optical CDMA Communication System”. Malaysian Journal of Computer Science, vol. 19, no. 1, June 2006, pp. 1-8, https://malindojournal.um.edu.my/index.php/MJCS/article/view/6248.