Kwonhue Choi received his B.S., M.S., and Ph.D. degrees in electronic and electrical engineering from the Pohang University of Science and Technology, Pohang, South Korea, in 1994, 1996, and 2000, respectively. From 2000 to 2003, he was with the Electronics and Telecommunications Research Institute, Daejeon, South Korea, as a Senior Research Staff Member. In 2003, he joined the Department of Information and Communication Engineering, Yeungnam University, Gyeongsan, South Korea, where he is currently a Professor. He has authored a textbook, "Problem-Based Learning in Communication Systems Using MATLAB and Simulink" (Wiley, 2016). His research areas include signal design for communication systems, multiple access schemes, diversity schemes for wireless fading channels, and multiple antenna systems.