Design of Novel Orthogonal Space-Time-Frequency Block Codes for OFDM systems Over Fading Channel Environments. - Keonkook Lee; Hoojin Lee; Namseok Chang; Joonhyuk Kang (VTC Fall, 2007)

Reduced-Complexity Stack-Based Iterative Detection for V-BLAST Systems. - Jongsub Cha; Keonkook Lee; Joonhyuk Kang (IEICE Trans. Commun., 2007)

Iterative Near-optimal Decoder for STBC from CIOD over Time-Varying Channel. - Eunhye Nam; Namjeong Lee; Keonkook Lee; Joonhyuk Kang; Youngok Kim (EW, 2008)

Performance Enhancement of STBC-OFDM from CIOD with Interference Cancellation over Time-Varying Channels. - Namjeong Lee; Hoojin Lee; Keonkook Lee; Eunhye Nam; Joonhyuk Kang; Youngok Kim (VTC Fall, 2008)

A Novel Method of Limited Channel Feedback for OFDMA Systems. - Sunhyoung Kwon; Namjeong Lee; Keonkook Lee; Joonhyuk Kang; Gye-Tae Gil; Se-Jun Park (VTC Fall, 2009)

Base station selection technique for MMSE joint transmission in downlink cooperative MIMO system. - Namjeong Lee; Keonkook Lee; Eunhye Nam; Sunhyoung Kwon; Joonhyuk Kang; Gye-Tae Gil (WCNC, 2009)

A novel orthogonal space-time-frequency block code for OFDM systems. - Keonkook Lee; Youngok Kim; Joonhyuk Kang (IEEE Commun. Lett., 2009)

A Simple Adaptive Switching Scheme between STBC-OFDM and SFBC-OFDM Systems. - Keonkook Lee; Youngok Kim; Joonhyuk Kang (IEICE Trans. Commun., 2009)

Multiuser MIMO Downlink with Linear Precoding for Full Multiplexing Gain. - Jinkyu Kang; Keonkook Lee; Jungho Myung; Joonhyuk Kang (VTC Fall, 2010)

Adaptive Cooperative Spectrum-Sensing Scheme for Cognitive Radio System. - Jungho Myung; Keonkook Lee; Jinkyu Kang; Joonhyuk Kang (VTC Fall, 2010)

Spectrum Leasing via Cooperation for Enhanced Physical-Layer Secrecy. - Keonkook Lee; Osvaldo Simeone; Chan-Byoung Chae; Joonhyuk Kang (ICC, 2011)

MIMO Transceiver Designs for Spatial Sensing in Cognitive Radio Networks. - Keonkook Lee; Chan-Byoung Chae; Robert W. Heath Jr.; Joonhyuk Kang (IEEE Trans. Wirel. Commun., 2011)

Transmit beamforming with imperfect CSIT in spectrum leasing for physical-layer security. - Seongah Jeong; Keonkook Lee; Joonhyuk Kang; Youngseok Baek; Bontae Koo (CCNC, 2012)

Low complexity cooperative jamming strategies in secure cellular network. - Seongah Jeong; Keonkook Lee; Joonhyuk Kang; Daehan Ha (ISCIT, 2012)

MMSE receiver spatial sensing technique for cognitive radio networks. - Keonkook Lee; Chan-Byoung Chae; Joonhyuk Kang; Tae-Kyung Sung (ISCIT, 2012)

Cooperative jammer design in cellular network with internal eavesdroppers. - Seongah Jeong; Keonkook Lee; Joonhyuk Kang; Youngseok Baek; Bontae Koo (MILCOM, 2012)

Cognitive beamforming based smart metering for coexistence with wireless local area networks. - Keonkook Lee; Chan-Byoung Chae; Tae-Kyung Sung; Joonhyuk Kang (J. Commun. Networks, 2012)

Energy efficiency analysis with circuit power consumption in massive MIMO systems. - Daehan Ha; Keonkook Lee; Joonhyuk Kang (PIMRC, 2013)

Spectrum Leasing via Cooperation for Enhanced Physical-Layer Secrecy. - Keonkook Lee; Chan-Byoung Chae; Joonhyuk Kang (IEEE Trans. Veh. Technol., 2013)

Secure Transmission in Downlink Cellular Network with a Cooperative Jammer. - Seongah Jeong; Keonkook Lee; Heon Huh; Joonhyuk Kang (IEEE Wirel. Commun. Lett., 2013)

Advanced Limited Feedback Designs for FD-MIMO Using Uniform Planar Arrays. - Junil Choi; Keonkook Lee; David J. Love; Taeyoung Kim; Robert W. Heath Jr. (GLOBECOM, 2015)

Soft decision-directed channel estimation for multiuser MIMO systems. - Sunho Park; Jun Won Choi; Keonkook Lee; Byonghyo Shim (PIMRC, 2015)

Advanced Quantizer Designs for FD-MIMO Systems Using Uniform Planar Arrays. - Jiho Song; Junil Choi; Keonkook Lee; Taeyoung Kim; Ji-Yun Seol; David J. Love (GLOBECOM, 2016)

Transparent operation of Kronecker product based full dimension MIMO to exploit 2D antenna array. - Suryong Jeong; Keonkook Lee; Taeyoung Kim; Ji-Yun Seol; Md Saifur Rahman 001; Young-Han Nam (WCNC, 2016)