Topic: Modulating Information through the Environment using Reconfigurable Intelligent Surface
Speaker: Assistant Professor Hei Victor Cheng, Department of Electrical and Computer Engineering, Aarhus University
Date and time: 10:00–11:00, July 21
Venue: Room 1A-200, SIST
Host: LIAN Lixiang
Abstract:
This presentation investigates the information theoretical limit of a reconfigurable intelligent surface (RIS) aided communication scenario in which the RIS and the transmitter either jointly or independently send information to the receiver. The RIS is an emerging technology that uses a large number of passive reflective elements with adjustable phases to intelligently reflect the transmit signal to the intended receiver. While most previous studies of the RIS focus on its ability to beamform and to boost the received signal-to-noise ratio (SNR), during this talk we will show that if the information data stream is also available at the RIS and can be modulated through the adjustable phases at the RIS, so that significant improvement in the degree-of-freedom (DoF) of the overall channel is possible.
Biography:
Hei Victor Cheng received the B.Eng. degree in Electronic Engineering from Tsinghua University, the M.Phil. degree in Electronic and Computer Engineering from the Hong Kong University of Science and Technology, and the Ph.D. degree in Electrical Engineering, Linkoping University. He worked as a Post-Doctoral Research Fellow at the University of Toronto. He is now an Assistant Professor in the Department of Electrical and Computer Engineering at Aarhus University. His current research interests include next generation cellular technologies, intelligent surfaces, and machine learning for communications and signal processing.