Beam Focusing Design for Secure Near-Field Communications
This seminar explores securing near-field communications against eavesdropping using beam focusing, examining challenges and solutions in narrowband, wideband, and RIS-assisted systems, and demonstrating the proposed design's advantages through simulations.
Overview
This talk will focus on securing near-field (NF) communications against potential eavesdroppers through beam focusing. It will consist of three parts. The first part will address narrowband communication and explain how beamforming transitions into beam focusing as we move from far-field (FF) to NF communications. It will also discuss how the challenges related to physical layer security (PLS) evolve in NF communications. The second part will shift to wideband communication, highlighting its challenges, particularly the beam-splitting effect. The final part will extend the discussion to the PLS of reconfigurable intelligent surface (RIS)-assisted NF wideband communications. Our simulation results will demonstrate the advantages of the proposed beam-focusing design over state-of-the-art solutions.
Presenters
Ali Arshad Nasir, Associate Professor, Electrical and Computer Engineering, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
Brief Biography
Ali Arshad Nasir received the Ph.D. degree in telecommunications engineering from the Australian National University, Australia, in 2013, where he worked as a Research Fellow from 2012 to 2015. From 2015 to 2016, he was an Assistant Professor with the School of Electrical Engineering and Computer Science, National University of Sciences and Technology, Pakistan. He joined the Department of Electrical Engineering, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia, in 2016, where he is currently working as an Associate Professor. His research interests are in the area of signal processing in wireless communication systems. He served as an Editor for IEEE WIRELESS COMMUNICATIONS LETTERS from 2022 to 2023. He is currently an Editor of IEEE COMMUNICATIONS LETTERS.
