Ph.D. Thesis was discussed in Department of Electrical Engineering / College of Engineering at University of Mosul entitled “Reflecting Intelligent Surfaces for 5G and beyond Communications Systems”, Supervised by Assist. Prof. Dr. Saad Ahmed Ayoob On Sunday, August 31, 2025. The Thesis presented by Hiba Abdalkhalq Hamdoon Alsawaf aimed to investigate the Intelligent Reflecting Surface (IRS) technology, which represents an innovative approach to enhancing the performance of wireless communication networks through dynamic control of electromagnetic wave propagation characteristics, as well as in channel estimation. The thesis discussed Performance Evaluation of Channel Estimation for Multiple Users and Various Communication Models Operating in [Read More]