712 citations · 2.4k across the 67 of their papers we have counts for
8 papers · 1 filter
Deep Neural Network Based Active User Detection for Grant-free NOMA Systems
Wonjun Kim, Youngjun Ahn, Byonghyo Shim
As a means to support the access of massive machine-type communication devices, grant-free access and non-orthogonal multiple access (NOMA) have received great deal of attention in…
Compressive Sensing Based Channel Estimation for Millimeter-Wave Full-Dimensional MIMO with Lens-Array
Ziwei Wan, Zhen Gao, Byonghyo Shim +3
Channel estimation (CE) for millimeter-wave (mmWave) lens-array suffers from prohibitive training overhead, whereas the state-of-the-art solutions require an extra complicated radi…
Joint Sparse Recovery Using Signal Space Matching Pursuit
Junhan Kim, Jian Wang, Luong Trung Nguyen +1
In this paper, we put forth a new joint sparse recovery algorithm called signal space matching pursuit (SSMP). The key idea of the proposed SSMP algorithm is to sequentially invest…
Channel aware sparse transmission for ultra low-latency communications in TDD systems
Wonjun Kim, Hyoungju Ji, Byonghyo Shim
Major goal of ultra reliable and low latency communication (URLLC) is to reduce the latency down to a millisecond (ms) level while ensuring reliability of the transmission. Since t…
On the Fundamental Recovery Limit of Orthogonal Least Squares
Junhan Kim, Jian Wang, Byonghyo Shim
Orthogonal least squares (OLS) is a classic algorithm for sparse recovery, function approximation, and subset selection. In this paper, we analyze the performance guarantee of the…
Downlink Pilot Precoding and Compressed Channel Feedback for FDD-Based Cell-Free Systems
Seungnyun Kim, Jun Won Choi, Byonghyo Shim
Cell-free system where a group of base stations (BSs) cooperatively serves users has received much attention as a promising technology for the future wireless systems. In order to…