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Education

• B.S., Computer Science, Hallym University, Korea, 1987
• M.S., Computer Science, Michigan State University, East Lansing, 1992
• D.Sc., Computer Science, George Washington University, Washington D.C., 1996

Publications

• S. Sankaranarayananan, S. Subramaniam, H. Choi, and H.-A. Choi, “Survivable Traffic Grooming in WDM Ring Networks,” Proceedings of OptiComm 2003, Dallas, Texas, Oct. 2003.
• H. Choi, N. Grag and H.-A. Choi, “Minimal Delay Traffic Grooming for WDM Star Networks,” Proceedings of OptiComm 2003, Dallas, Texas, Oct. 2003.
• S. Stanic, S. Subramaniam, H. Choi, G. Sahin, H.-A. Choi, “Efficient Alarm Management in Optical Networks,” Proceedings of DARPA Information Survivability Conference and Exposition, Vol. 1, pp. 252-260, April 2003.
• H. Choi, Suresh Subramaniam, H.-A. Choi, “Loopback Recovery from Neighboring Double-link Failures in WDM Mesh Networks,” International Journal of Information Science, vol. 149, issue 1-3, January 2003.
• H. Lee, H. Choi, S. Subramaniam, H.-A. Choi, “Survival Embedding of Logical Topology in WDM Ring Networks,” International Journal of Information Science, vol. 149, issue 1-3, January 2003.
• H. Choi, “App-to-All Broadcast in Broadcast-and-Select WDM Networks with Tunable Devices of Limited Tuning Ranges,” IEICE Trans. On Communications, September 2003.
• H. Choi, S. Subramaniam, H.-A. Choi, “Loopback Methods for Double-Link Failure Recovery in Optical Networks,” under revision (ACM/IEEE Transactions on Networking).

Research Interests

• Optical networks, high-speed networks, network congestion control, graph theory and combinatorics

Research Lab

• Networks and Communications