Ali H. Alqahtani received his B.Sc. (Hons.) and M.Sc. degrees from King Abdul Aziz University, Jeddah, Saudi Arabia, in 2001 and 2009, respectively, both in electrical engineering (electronics and communications engineering). He obtained his Ph.D. in electrical engineering (communications) from King Saud University, Riyadh, Saudi Arabia, in 2016. Since December 2017, he has been an assistant professor at the College of Applied Engineering at King Saud University, Al-Muzahimya Campus. His recent research interests include space–time codes, massive MIMO systems, spatial modulation, visible light communications (VLC), reconfigurable intelligent surfaces (RIS), lens antennas, and 5G and 6G techniques for wireless networks.