Trellis Coded Modulation Based on Time-Varying Mapping and Encoders for Utilitzing a Channel Intersymbol Interference. - Ryuji Kohno; Choonsik Yim; Hideki Imai (AAECC, 1990)

Array Antenna Beamforming Based On Estimation Of Arrival Angles Using DFT On Spatial Domain. - Ryuji Kohno; Choonsik Yim; Hideki Imai (PIMRC, 1991)