Dr. Changick Song is a Professor at the Department of Electronic Engineering, Korea National University of Transportation, Chungju, Republic of Korea. He completed his B.S., M.S., and Ph.D. studies in Electrical Engineering at Korea University, Seoul, Republic of Korea, in 2007, 2009, and 2012, respectively. From 2012 to 2013, he was a Research Professor at Korea University. From 2013 to 2014, he was a Post-Doctoral Research Associate with the Communications and Signal Processing Group at the Imperial College London, London, UK. His research interests include information theory and signal processing for wireless communications and security.