100 citations · 194 across the 11 of their papers we have counts for
11 papers
Massive MIMO Evolution Towards 3GPP Release 18
Huangping Jin, Kunpeng Liu, Gilwon Lee +7
Since the introduction of fifth-generation new radio (5G-NR) in Third Generation Partnership Project (3GPP) Release 15, swift progress has been made to evolve 5G with 3GPP Release…
Advanced Receiver Architectures for Millimeter Wave Communications with Low-Resolution ADCs
Jinseok Choi, Gilwon Lee, Ahmed Alkhateeb +3
Employing low-resolution analog-to-digital converters (ADCs) for millimeter wave receivers with large antenna arrays provides opportunity to efficiently reduce power consumption of…
A Hybrid Beamforming Receiver with Two-Stage Analog Combining and Low-Resolution ADCs
Jinseok Choi, Gilwon Lee, Brian L. Evans
In this paper, we propose a two-stage analog combining architecture for millimeter wave (mmWave) communications with hybrid analog/digital beamforming and low-resolution analog-to-…
Two-Stage Analog Combining in Hybrid Beamforming Systems with Low-Resolution ADCs
Jinseok Choi, Gilwon Lee, Brian L. Evans
In this paper, we investigate hybrid analog/digital beamforming for multiple-input multiple-output (MIMO) systems with low-resolution analog-to-digital converters (ADCs) for millim…
User Scheduling for Millimeter Wave Hybrid Beamforming Systems with Low-Resolution ADCs
Jinseok Choi, Gilwon Lee, Brian L. Evans
We investigate uplink user scheduling for millimeter wave (mmWave) hybrid analog/digital beamforming systems with low-resolution analog-to-digital converters (ADCs). Deriving new s…
Randomly-Directional Beamforming in Millimeter-Wave Multi-User MISO Downlink
Gilwon Lee, Youngchul Sung, Junyeong Seo
In this paper, randomly-directional beamforming (RDB) is considered for millimeter-wave (mmwave) multi-user (MU) multiple-input single-output (MISO) downlink systems. By using asym…
Two-Stage Beamformer Design for Massive MIMO Downlink By Trace Quotient Formulation
Donggun Kim, Gilwon Lee, Youngchul Sung
In this paper, the problem of outer beamformer design based only on channel statistic information is considered for two-stage beamforming for multi-user massive MIMO downlink, and…
Training Beam Sequence Design for Millimeter-Wave MIMO Systems: A POMDP Framework
Junyeong Seo, Youngchul Sung, Gilwon Lee +1
In this paper, adaptive training beam sequence design for efficient channel estimation in large millimeter-wave(mmWave) multiple-input multiple-output (MIMO) channels is considered…
Pilot Beam Sequence Design for Channel Estimation in Millimeter-Wave MIMO Systems: A POMDP Framework
Junyeong Seo, Youngchul Sung, Gilwon Lee +1
In this paper, adaptive pilot beam sequence design for channel estimation in large millimeter-wave (mmWave) MIMO systems is considered. By exploiting the sparsity of mmWave MIMO ch…
A New Approach to User Scheduling in Massive Multi-User MIMO Broadcast Channels
Gilwon Lee, Youngchul Sung
In this paper, a new user-scheduling-and-beamforming method is proposed for multi-user massive multiple-input multiple-output (massive MIMO) broadcast channels in the context of tw…
Coordinated Beamforming with Relaxed Zero Forcing: The Sequential Orthogonal Projection Combining Method and Rate Control
Juho Park, Gilwon Lee, Youngchul Sung +1
In this paper, coordinated beamforming based on relaxed zero forcing (RZF) for K transmitter-receiver pair multiple-input single-output (MISO) and multiple-input multiple-output (M…