Dr. Ke Guan, (S'10-M'13-SM’19) received B.E. degree and Ph.D. degree from Beijing Jiaotong University in 2006 and 2014, respectively. He is a Professor in State Key Laboratory of Rail Traffic Control and Safety & School of Electronic and Information Engineering, Beijing Jiaotong University. In 2015, he has been awarded a Humboldt Research Fellowship for Postdoctoral Researchers. In 2009, he was a Visiting Scholar with Universidad Politecnica de Madrid, Spain. From 2011 to 2013, he was a Research Scholar with the Institut fuer Nachrichtentechnik (IfN) at Technische Universitaet Braunschweig, Germany. From September 2013 to January 2014, he was invited to conduct joint research in Universidad Polit\'{e}cnica de Madrid, Spain. He has authored/co-authored two books and one book chapter, more than 200 journal and conference papers, and ten patents. His current research interests include measurement and modeling of wireless propagation channels, high-speed railway communications, vehicle-to-x channel characterization, and indoor channel characterization for high-speed short-range systems including future terahertz communication systems. Dr. Guan is the pole leader of EURNEX (European Railway Research Network of Excellence). He was the recipient of a 2014 International Union of Radio Science (URSI) Young Scientist Award. His papers received 14 Best Paper Awards, including IEEE vehicular technology society Neal Shepherd memorial best propagation paper awards in 2019 and 2022. He is an Editor of IEEE Vehicular Technology Magazine, IEEE ACCESS, IET Microwave, Antenna and Propagation, Physical Communication, and a Guest Editor of the IEEE Transactions on Vehicular Technology and IEEE Communication Magazine. He serves as a Publicity Chair in PIMRC 2016, the Publicity Co-Chair in ITST 2018, the Track Co-Chair in EuCNC, the International Liaison of EUSIPCO 2019, the Session Convener of EuCAP 2015-2021, and a TPC Member for many IEEE conferences, such as Globecom, ICC, and VTC. He has been a contact person in 3GPP and a member of the IC1004, CA15104, and CA20120 initiatives.