Fluid Antenna Systems in the Uplink

Fluid Antenna Systems (FAS) are emerging as a key 6G technology, turning the antenna aperture into a highly reconfigurable spatial resource. FAS can sample rich spatial diversity for reliability, security, and multiple access with minimal transmitter-side CSI. In this talk, I will first recap the core idea of Fluid Antenna Multiple Access (FAMA), showing how high-resolution spatial sampling at the receiver can separate users without complex multiuser detection. I will then present recent results on utilizing a particular form of FAMA, referred to as CUMA, in the uplink. Kai-Kit Wong was born in Hong Kong and received the BEng, the MPhil, and the PhD degrees, all in Electrical and Electronic Engineering, from the Hong Kong University of Science and Technology, Hong Kong, in 1996, 1998, and 2001, respectively. He is Chair Professor of Wireless Communications at the Department of Electronic and Electrical Engineering, University College London after taking appointments at University of Hong Kong and University of Hull and visiting positions at Lucent Technologies, Bell Labs and Stanford University. His current research centers around 6G and beyond mobile communications. He is one of the early researchers who proposed multiuser MIMO. His first paper on multiuser MIMO was published in WCNC 2000 which appeared to be the first ever research paper on this topic. He is Fellow of CIC, IEEE and IET. He served as the Editor-in-Chief for IEEE Wireless Communications Letters between 2020 and 2023.