Frequency-hopped multiple-access communication with nonorthogonal BFSK in Rayleigh fading channels. - Ho Kyu Choi; Sang Wu Kim (IEEE Trans. Commun., 1998)

An adaptive technique for transmit antenna diversity with feedback. - Jinho Choi 001; Ho Kyu Choi; Hyeon Woo Lee (IEEE Trans. Veh. Technol., 2002)