Kassir, Aiman, Rudzidatul Akmam Dziyauddin, Hazilah Mad Kaidi, and Mohd Azri Mohd Izhar. “A Review of Power Domain Non-Orthogonal Multiple Access in 5G Networks”. International Journal of Integrated Engineering 10, no. 7 (November 26, 2018). Accessed July 18, 2024. https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/3497.