Dang, Khoa, Thanh Ngo, and Nghia Nguyen. “Performance of Non-Orthogonal Multiple Access Downlink System Using the Log-Likelihood Ratio”. VNUHCM Journal of Advanced Research in Natural Sciences 4, no. 3 (August 16, 2020): 621-632. Accessed April 7, 2026. https://arns.vnuhcmjournal.com.vn/index.php/arns/article/view/662.