Fadia Massoud Abusalah, Abdulgani Albagul. Deep Learning for Channel Estimation and CSI Feedback in FDD Massive MIMO: A Critical Review and Future Directions. ijees [Internet]. 2026 Sep. 3 [cited 2026 Sep. 6];4(2):153-70. Available from: https://ijees.org/index.php/ijees/article/view/184