Ismael ahmed, Salar, and siddeeq y.ameen. “6G Mobile Communication Performance Enhancement Using Cooperative NOMA and Caching”. Al-Rafidain Engineering Journal (AREJ) 30, no. 1 (March 1, 2025): 135–149. Accessed September 10, 2025. https://edusj.uomosul.edu.iq/index.php/arej/article/view/31147.