High Power Efficiency and Low Nonlinear Distortion for Wireless Visible Light Communication. - Sang Burm Ryu; Jae Hoon Choi; Junyeong Bok; HuiKyu Lee; Heung-Gyoon Ryu (NTMS, 2011)

Group-oriented multiuser beamforming-OFDM for different QoS requirement. - Dong Hyung Lee; HuiKyu Lee; Heung-Gyoon Ryu (WOCN, 2011)

An efficient correction of carrier frequency offset and sample timing offset by feedback method. - HuiKyu Lee; Heung-Gyoon Ryu (WTS, 2011)