Angle-of-Arrival Estimation in Antenna Arrays based on Monopulse Signal. - Ha-Lim Song; Sung Sik Nam; Young-Chai Ko (ICUFN, 2019)

Beam Tracking Algorithm for UAV Communications Using Kalman Filter. - Ha-Lim Song; Young-Chai Ko; Jungil Cho; Chanho Hwang (ICTC, 2020)

Integrating GPS Sensor and Beamforming for UAV Tracking Algorithm. - Ha-Lim Song; Young-Chai Ko (ICEIC, 2021)

Adaptive Beamforming Design for Angular Dynamics in High-Speed Mobility. - Ha-Lim Song; Young-Chai Ko (ICTC, 2021)

Angle-of-Arrival Estimation Technique for Fast Beamforming Using Monopulse Signal in the Antenna Array Systems. - Ha-Lim Song; Sung Sik Nam; Young-Chai Ko (IEEE Access, 2021)

Robust and Low Complexity Beam Tracking With Monopulse Signal for UAV Communications. - Ha-Lim Song; Young-Chai Ko (IEEE Trans. Veh. Technol., 2021)

Beam Alignment for High-Speed UAV via Angle Prediction and Adaptive Beam Coverage. - Ha-Lim Song; Young-Chai Ko (IEEE Trans. Veh. Technol., 2021)

Distributed Beam Tracking for Vehicular Communications via UAV-Assisted Cellular Network. - Dohyun Jang; Ha-Lim Song; Young-Chai Ko; H. Jin Kim (IEEE Trans. Veh. Technol., 2023)