11 papers
Scalable Beamforming Design for Multi-RIS-Aided MU-MIMO Systems with Imperfect CSIT
Mintaek Oh, Jinseok Choi
This paper presents a scalable beamforming design for maximizing the spectral efficiency (SE) of multi-reconfigurable intelligent surface (RIS)-aided communications through joint o…
Full-Duplex Multiuser MISO Under Coarse Quantization: Per-Antenna SQNR Analysis and Beamforming Design
Seunghyeong Yoo, Jaehyun Kim, Seokjun Park +3
We investigate full-duplex (FD) multi-user multiple input single-output systems with coarse quantization, aiming to characterize the impact of employing low-resolution analog-to-di…
Hybrid Precoding Revisited: Low-Dimensional Subspace Perspective for MU-MIMO Systems
Mintaek Oh, Jinseok Choi
This letter presents a low-complexity hybrid precoding framework for multiuser multiple-input multiple-output (MIMO) systems by leveraging a low-dimensional subspace property. Unde…
Efficient RF Chain Selection for MIMO Integrated Sensing and Communications: A Greedy Approach
Subin Shin, Seongkyu Jung, Jinseok Choi +1
In multiple-input multiple-output integrated sensing and communication (MIMO ISAC) systems, radio frequency chain (i.e., RF chain) selection plays a vital role in reducing hardware…
Integrated Sensing and Communications in Downlink FDD MIMO without CSI Feedback
Namhyun Kim, Juntaek Han, Jinseok Choi +3
In this paper, we propose a precoding framework for frequency division duplex (FDD) integrated sensing and communication (ISAC) systems with multiple-input multiple-output (MIMO).…
Multibeam Satellite Communications with Massive MIMO: Asymptotic Performance Analysis and Design Insights
Seyong Kim, Jinseok Choi, Wonjae Shin +2
To achieve high performance without substantial overheads associated with channel state information (CSI) of ground users, we consider a fixed-beam precoding approach, where a sate…