N. Hamarsheh, Mohammad M., Mohamad Khazani Abdullah, Sabira Khatun, and Hossam M. H. Shalaby. 2006. “Configuration Design and Performance Analysis of a Fast Frequency Modulation Optical CDMA Communication System”. Malaysian Journal of Computer Science 19 (1):1-8. https://ejournal.um.edu.my/index.php/MJCS/article/view/6248.