Yan-Yu Zhang received the B.S. degree in communication engineering, the M.S. degree in communication and information systems, and the Ph.D. degree in information and communication engineering from the National Digital Switching System Engineering and Technological Research Center, Zhengzhou, China, in 2009, 2012, and 2016, respectively. He is currently a Lecturer with The National Digital Switching System Engineering and Technological Research Center. His research interests include finite-alphabet signal processing for radio frequencies, optical wireless communications, fundamental structure establishment, and energy-efficient designs for multiuser finite-alphabet signals.