An enhanced DQRUMA/MC-CDMA protocol with a variable request pool scheme for wireless packet networks. - Jae Yoon Park; Dan Keun Sung; Sung Cheol Chang; Young Hoon Kwon (VTC Fall, 2001)

Wireless Broadband Internet Access in Korea. - Yoon Ju Lee; Sung Cheol Chang; Young Il Kim; Song In Choi; Jee Hwan Ahn (ICSNC, 2006)

Performance analysis of random access in IEEE 802.16m system. - Hyun Lee; Eunkyung Kim 004; Sungkyung Kim; Sung Cheol Chang; Chulsik Yoon; Kyoung-Rok Cho (ICTC, 2010)

Discovering Mobile Applications in Device-to-Device Communications: Hash Function-Based Approach. - Kae Won Choi; Hyun Lee; Sung Cheol Chang (VTC Spring, 2014)