Dissertation Defense: Hybrid Beamforming for Terahertz Ultra-Massive MIMO Systems

Date: 2023/05/23 - 2023/05/23

Dissertation Title: Hybrid Beamforming for Terahertz Ultra-Massive MIMO Systems

Speaker: Longfei Yan, Ph.D. candidate at UM-SJTU Joint Institute

Time: May 23rd from 4:00 p.m., 2023 (Beijing Time)

Location: Room 403, Longbin Building


Terahertz (THz) communications are regarded as a pillar technology for the 6G wireless systems, by offering multi-ten-GHz bandwidth. To overcome the huge propagation loss in the THz band, the antenna array arranged with ultra-massive antennas is used to compose the ultra-massive multiple-input and multiple-output (UM-MIMO) system to enable an enticingly high array gain. In the UM-MIMO systems, hybrid beamforming technology stands out for its great potential in promisingly high data rate and reduced power consumption. Due to the THz peculiarities such as high frequency, sparse channel, ultra-massive antennas, and wide bandwidth, there exist several unique challenges for THz hybrid beamforming. To overcome the challenges of THz hybrid beamforming, we propose four novel hybrid beamforming solutions. The simulation results validate the effectiveness of the proposed solutions.


Longfei Yan received his B.E degree in communication engineering from Harbin Institute of Technology in 2018. He is currently a Ph.D. candidate at the UM-SJTU Joint Institute, supervised by Prof. Chong Han. His current research interests include ultra-massive MIMO and beamforming technologies in the terahertz band.