Doctor of Philosophy, Korea Advanced Institute of Science and Technology, 1999.
Postdoctoral researcher Nippon Telegraph and Telephone DoCoMo, Yokosuka, Japan, 1999—2000. Researcher Saskatchewan Telecom, Republic of Korea, 2000—2002. Professor Inha University, Inchon, Republic of Korea, since 2002.
Member of Institute of Electrical and Electronics Engineers.
Married Eun Shil Bae. Children: Ji Na, Ji Hoon.