Prof. Dr. Yujae Song received his Ph.D degree in electrical engineering from the Korea Advanced Institute of Science and Technology, Daejeon, Korea, in 2016. He was a Visiting Scholar in communication systems with the KTH Royal Institute of Technology, Stockholm, Sweden, in 2015. Since 2016, he has been a Senior Researcher with the Maritime ICT Research and Development Center, Korea Institute of Ocean Science and Technology, Busan, South Korea. His research interests include the design, analysis, and optimization of various wireless communication systems, including 5G, maritime/underwater and smart grid communications.