Report title: STAR: Simultaneous Transmission and Reflection for 360 ◦ Coverage by Intelligent Surface

Report time: Tuesday, June 29th, 16:00-17:00

Tencent Meeting Link: 228 848 139

Abstract:

A novel simultaneously transmitting and reflecting (STAR) system design relying on reconfigurable intelligent surfaces (RISs) is conceived. First, an existing prototype is reviewed and the potential benefits of STAR-RISs are discussed. Then, the key differences between conventional reflecting-only RISs and STAR-RISs are identified from the perspectives of hardware design, physics principles, and communication system design. Furthermore, the basic signal model of STAR-RISs is introduced, and three practical protocols are proposed for their operation, namely energy splitting, mode switching, and time switching. Based on the proposed protocols, a range of promising application scenarios are put forward for integrating STAR-RISs into next-generation wireless networks. By considering the downlink of a typical RIS-aided multiple-input single-output (MISO) system, numerical case studies are provided for revealing the superiority of STAR-RISs over other baselines, when employing the proposed protocols. Finally, several open research problems are discussed.

Introduction of Lectuer:

Yuanwei Liu is an Assistant Professor (Lecturer) at Queen Mary University of London (QMUL) since 2017, where he received the PhD degree in 2016. He was a Postdoctoral Research Fellow at King's College London (KCL) (Sep. 2016- Aug. 2017). His research interests are NOMA, RIS, UAV communications, and machine learning. He has over 170 refereed publications attributed, including 100+ IEEE journal papers, 4 book/book Chapters. He has over 13 ESI highly cited papers and 17 IEEE ComSoc Best Readings papers.  He received over 7900 citations in Google Scholar with an h-index is 40. He received IEEE ComSoc Outstanding Young Researcher Award for EMEA in 2020. He is the recipient of the 2020 Early Achievement Award of the IEEE ComSoc - Signal Processing and Computing for Communications (SPCC) Technical Committee. He is listed among the World's Top 2% Scientists by Stanford University.

He is the Editor of the IEEE TRANSACTIONS ON Wireless COMMUNICATIONS, the IEEE TRANSACTIONS ON COMMUNICATIONS, and IEEE COMMUNICATIONS LETTERS. He serves as the leading Guest Editor for IEEE JSAC special issue on Next Generation Multiple Access, a Guest Editor for IEEE JSTSP special issue on Signal Processing Advances for Non-Orthogonal Multiple Access in Next Generation Wireless Networks. He has served as a TPC Member for many IEEE conferences, such as GLOBECOM and ICC. He received the Exemplary Reviewer Certificate of IEEE WIRELESS COMMUNICATIONS LETTERS in 2015, IEEE TRANSACTIONS ON COMMUNICATIONS in 2016 and 2017, and IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS in 2017 and 2018. He has served as the Publicity Co-Chair for VTC 2019-Fall. He is the leading contributor for “Best Readings for Non-Orthogonal Multiple Access (NOMA)” and the primary contributor for “Best Readings for Reconfigurable Intelligent Surfaces (RIS)”. He serves as the chair of Special Interest Group (SIG) in Signal Processing and Computing for Communications (SPCC) Technical Committee on the topic of signal processing Techniques for next generation multiple access (NGMA), the vice-chair of SIG Wireless Communications Technical Committee (WTC) on the topic of Reconfigurable Intelligent Surfaces for Smart Radio Environments (RISE), and the Tutorials and Invited Presentations Officer for Reconfigurable Intelligent Surfaces Emerging Technology Initiative.