Keynote Speaker

Qiang Cheng
Southeast University

Reconfigurable Intelligent Surface for Wireless Channel Control

Abstract: The Reconfigurable Intelligent Surface (RIS) is a key technology in wireless communication for channel control. RIS, a planar array of passive reflecting elements, can adjust the amplitude and phase of incident electromagnetic waves. For wireless channel control, RIS has multiple benefits. It can enhance the signal - to - noise ratio (SNR) by focusing energy towards the receiver. Also, it mitigates interference by deflecting interfering signals. Moreover, RIS enables customized wireless channels, like creating a line - of - sight - like channel in non - line - of - sight situations. The design and optimization related to RIS involve considerations like reflection coefficient determination and its placement. However, challenges are present. Channel estimation is more complex with RIS. RIS elements have hardware constraints in adjustment, and efficient control algorithms are needed due to a large number of elements. Overall, RIS has great application potentials in wireless channel control despite these challenges.

Bio: Dr. Qiang Cheng is the leading professor at Southeast University and deputy director of the State Key Laboratory of Millimeter Waves. He is the recipient of the National Natural Science Foundation for Distinguished Young Scholar. He is also the senior IEEE member and has long been involved in electromagnetic metamaterials research. He is selected as a Highly Cited Researcher by Clarivate Analytics. He has been honored with the second - prize of the National Natural Science Award in 2014 and 2018, one of Top Ten Scientific Advances in China in 2010, and one of Ten Major Scientific and Technological Progress of China's Colleges and Universities in 2021.