He received the B.S. degree from Seoul National University, Seoul, Korea in 1987, the M.S. degree from Columbia University, New York, U.S.A. in 1993, and the D.Sc. degree from Washington University, St. Louis, U.S.A., in 1998; all of these degrees were in electrical engineering. His current interests include wireless mesh networks and visible light communications. Before joining academia, Dr. Oh worked as a senior research engineer for LG Telecom, Korea, from 2000 to 2003 and as a technical consultant for AT&T, NJ in 1999.