- 1987 University of Southern California, Los Angeles (Ph.D.-Electrical Engineering)
- 1980 Seoul National Univ. (M.S.- Electronics Engineering)
- 1978 Seoul National Univ. (B.S.-Electronics Engineering)
- 1994 – Present GIST, Professor
- 1991-1994 Superconducting Super Collider Lab., Computer Communication Specialist
- 1989-1991 Schlumberger Inc. Senior Development Engineer
- 1987-1989 Communications Sciences Institute, Research Scientists
- Digital communication theory and applications
- Multimedia communication signal processing and its VLSI implementation
- Telemetry system equipment and measurement
- Digital MODEM development for broadband access
- Multimedia Communication Systems Laboratory
- The research activities in this Lab include general digital multimedia communication system design, its performance analysis and architectural consideration at the level of the physical layer and data link layer supporting various channel media: high speed digital transmission lines, optical fibers, and millimeter-wave air interfaces. Design environments for implementing real-time softwares and hardwares to realize high quality products of industrial standard multimedia communications, networks and telemetry systems are exploited under interdisciplinary cooperation with digital signal processing, queuing systems, real-time computing and algorithms, arithmetic processor design, and fiber optics. There are projects running to develop high-quality digital integrated service terminals, multimedia call processing and management software issues in personal communication and networking, specification and feasibility of the fiber-based access systems, and broadband access networking systems, in conjunction with photonics group and the information systems group.
- There are mainly three topics in the Multimedia Communication Systems Lab: multimedia call processing, broadband digital MODEM and multimedia multiple access control. To develop and analyze useful call processing algorithms for multimedia communications, initially supporting voice, data and video services, we are considering various research subjects including characterization of multimedia services, definition of the multiple access capacity, capacity enhancement issues in the system design, and algorithmic solutions to utilize the system resources. Broadband MODEM research fields include such subjects as channel characterization of millimeter-wave bands for broadband services, bandwidth-efficient coded modulations, multicarrier/multitone modulations for the practical applications covering Digital Subscriber Lines and Multipoint Communication Systems. Multiple access control is another research interest of this group, where variations of CDMA, PRMA, CSMA and their hybrids are considered for the wireless/wired multimedia communications.