Hong-Yeop Song received his B.S. degree in electronic engineering from Yonsei University, Seoul, South Korea, in 1984, and M.S.E.E. and Ph.D. degrees from the University of Southern California, Los Angeles, CA, USA, in 1986 and 1991, respectively. He spent two years as a Research Associate at USC and then two years as a Senior Engineer in standard team of Qualcomm Inc., San Diego, CA, USA. Since September 1995, he has been with the Department of Electrical and Electronic Engineering, Yonsei University. His research interests include digital communications and channel coding, design and analysis of various pseudo-random sequences for communications and cryptography. He is a member of the IEEE, the National Academy of Engineering of Korea (NAEK), Mathematical Association of America (MAA), Korean Mathematical Society (KMS), Korean Institute of Communication and Information Sciences (KICS), and many others. He received the 2017 Special Contribution Award from Korean Mathematical Society and the 2021 S.J.Choi Award from the Korean Government, both for his contribution to the global spread of the knowledge that S. J. Choi (1646–1715) from (old) Korea had discovered a pair of orthogonal Latin squares of order nine much earlier than Euler. He was the Chair of IEEE IT Society Seoul Chapter from 2009 to 2016. He served as the General Co-Chair for IEEE ITW 2015, Jeju, South Korea.