Generation and performance analysis of frequency-hopping optical orthogonal codes with arbitrary time blank patterns. - Chung-Keun Lee; Jinsoo Kim; Seung-Woo Seo (ICC, 2001)

Multi-length time-and-frequency-hopping codes for multimedia service differentiation. - Chung-Keun Lee; Jinsoo Kim; Seung-Woo Seo (ICC, 2005)

Time-and-Frequency-Hopping Optical Orthogonal Codes with Hierarchical Cross-Correlation Constraints for Service Differentiation. - Chung-Keun Lee; Seung-Woo Seo (ICC, 2007)