no code implementations • 17 Mar 2024 • Jungbin Yim, Jeonghun Park, Namyoon Lee
In this paper, we introduce a tractable approach to analyze the downlink coverage performance of multi-tier ISTNs, where each network tier operates with orthogonal frequency bands.
no code implementations • 14 Feb 2024 • Jinseok Choi, Jeonghun Park, Namyoon Lee, Ahmed Alkhateeb
In this paper, we present a joint communication and radar beamforming framework for maximizing a sum spectral efficiency (SE) while guaranteeing desired radar performance with imperfect channel state information (CSI) in multi-user and multi-target ISAC systems.
no code implementations • 19 Sep 2023 • Daeun Kim, Jeonghun Park, Namyoon Lee
Our primary finding is that dynamic coordinated beamforming significantly improves coverage compared to the absence of satellite coordination, in direct proportion to the number of antennas on each satellite.
no code implementations • 11 Aug 2023 • Jungyeon Kim, Hyowon Lee, Heedong Do, Jinseok Choi, Jeonghun Park, Wonjae Shin, Yonina C. Eldar, Namyoon Lee
The experimental results demonstrate the robustness of the model-based SIC methods, providing practical evidence of their effectiveness.
no code implementations • 18 Oct 2022 • Geon Choi, Jeonghun Park, Nir Shlezinger, Yonina C. Eldar, Namyoon Lee
The proposed split structure in the computation of the Kalman gain allows to compensate for state and measurement model mismatch effects independently.
no code implementations • 16 Sep 2021 • Kanguk Lee, Jinseok Choi, Dong Ku Kim, Jeonghun Park
In this paper, we consider a generalized model of conventional physical layer security, referred to as hierarchical information accessibility (HIA).
no code implementations • 16 Aug 2021 • Jeonghun Park, Jinseok Choi, Namyoon Lee, Wonjae Shin, H. Vincent Poor
Rate-splitting multiple access (RSMA) is a general multiple access scheme for downlink multi-antenna systems embracing both classical spatial division multiple access and more recent non-orthogonal multiple access.
no code implementations • 6 Aug 2021 • Jinseok Choi, Jeonghun Park, Namyoon Lee
For maximizing EE in quantized downlink massive MIMO systems, this paper formulates a precoding optimization problem with antenna selection; yet acquiring the optimal joint precoding and antenna selection solution is challenging due to the intricate EE characterization.
no code implementations • 29 Jul 2021 • Deokhwan Han, Jeonghun Park, Seok-Hwan Park, Namyoon Lee
A cloud radio access network (C-RAN) is a promising cellular network, wherein densely deployed multi-antenna remote-radio-heads (RRHs) jointly serve many users using the same time-frequency resource.
no code implementations • 17 Jun 2021 • Minsu Kim, Jeonghun Park, Jemin Lee
We consider an optimization problem that maximizes the sum spectral efficiency of delay-tolerant users while satisfying the latency constraint of delay-constrained users, and propose a generalized power iteration (GPI) precoding algorithm that finds a principal precoding vector.
no code implementations • 4 Aug 2020 • Heedong Do, Sungmin Cho, Jeonghun Park, Ho-Jin Song, Namyoon Lee, Angel Lozano
A relentless trend in wireless communications is the hunger for bandwidth, and fresh bandwidth is only to be found at ever-higher frequencies.
no code implementations • 11 Dec 2019 • Deokhwan Han, Jeonghun Park, Namyoon Lee
Cell-free massive multiple-input multiple-output (MIMO) is a promising cellular network.