3 citations · 6 across the 14 of their papers we have counts for
4 papers · 1 filter
Multi-Rate Variable-Length CSI Compression for FDD Massive MIMO
Bumsu Park, Heedong Do, Namyoon Lee
For frequency-division-duplexing (FDD) systems, channel state information (CSI) should be fed back from the user terminal to the base station. This feedback overhead becomes proble…
Hybrid Arrays: How Many RF Chains Are Required to Prevent Beam Squint?
Heedong Do, Namyoon Lee, Robert W. Heath +1
With increasing frequencies, bandwidths, and array apertures, the phenomenon of beam squint arises as a serious impairment to beamforming. Fully digital arrays with true time delay…
On the Learning of Digital Self-Interference Cancellation in Full-Duplex Radios
Jungyeon Kim, Hyowon Lee, Heedong Do +5
Full-duplex communication systems have the potential to achieve significantly higher data rates and lower latency compared to their half-duplex counterparts. This advantage stems f…
Finding Globally Optimal Configuration of Active RIS in Linear Time
Heedong Do, Namyoon Lee
This paper presents an algorithm for finding the optimal configuration of active reconfigurable intelligent surface (RIS) when both transmitter and receiver are equipped with a sin…