Non-orthogonal multiple access in downlink coordinated two-point systems
J Choi - IEEE Communications Letters, 2014 - ieeexplore.ieee.org
In order to improve the spectral efficiency, non-orthogonal multiple access (NOMA) with
superposition coding is employed in a coordinated system where downlink signals to users near …
superposition coding is employed in a coordinated system where downlink signals to users near …
IoT connectivity technologies and applications: A survey
The Internet of Things (IoT) is rapidly becoming an integral part of our life and also multiple
industries. We expect to see the number of IoT connected devices explosively grows and will …
industries. We expect to see the number of IoT connected devices explosively grows and will …
NOMA-based random access with multichannel ALOHA
J Choi - IEEE Journal on Selected Areas in Communications, 2017 - ieeexplore.ieee.org
In nonorthogonal multiple access (NOMA), the power difference of multiple signals is exploited
for multiple access and successive interference cancellation is employed at a receiver to …
for multiple access and successive interference cancellation is employed at a receiver to …
Application of non-orthogonal multiple access in LTE and 5G networks
As the latest member of the multiple access family, non-orthogonal multiple access (NOMA)
has been recently proposed for 3GPP LTE and is envisioned to be an essential component …
has been recently proposed for 3GPP LTE and is envisioned to be an essential component …
Minimum power multicast beamforming with superposition coding for multiresolution broadcast and application to NOMA systems
J Choi - IEEE Transactions on Communications, 2015 - ieeexplore.ieee.org
Multicast beamforming with superposition coding (SC) is studied for multiresolution broadcast
where both data streams of high priority (HP) and low priority (LP) are to be transmitted for …
where both data streams of high priority (HP) and low priority (LP) are to be transmitted for …
Federated learning with blockchain for autonomous vehicles: Analysis and design challenges
SR Pokhrel, J Choi - IEEE Transactions on Communications, 2020 - ieeexplore.ieee.org
We propose an autonomous blockchain-based federated learning (BFL) design for privacy-aware
and efficient vehicular communication networking, where local on-vehicle machine …
and efficient vehicular communication networking, where local on-vehicle machine …
Highly efficient oxygen reduction reaction activity of N‐doped carbon–cobalt boride heterointerfaces
V Jose, JMV Nsanzimana, H Hu, J Choi… - Advanced Energy …, 2021 - Wiley Online Library
Compositional and structural engineering of metal‐metalloid materials can boost their
electrocatalytic performance. Herein, a highly efficient and stable electrocatalytic system for the …
electrocatalytic performance. Herein, a highly efficient and stable electrocatalytic system for the …
Modulation of single atomic Co and Fe sites on hollow carbon nanospheres as oxygen electrodes for rechargeable Zn–air batteries
…, JMV Nsanzimana, M Srinivasan, J Choi… - Small …, 2021 - Wiley Online Library
Efficient bifunctional electrocatalysts for oxygen reduction reaction (ORR) and oxygen evolution
reaction (OER) are required for metal air batteries, to replace costly metals, such as Pt …
reaction (OER) are required for metal air batteries, to replace costly metals, such as Pt …
Structural and Electronic Optimization of MoS2 Edges for Hydrogen Evolution
The activity and accessibility of MoS 2 edge sites are critical to deliver high hydrogen
evolution reaction (HER) efficiency. Here, a porous carbon network confining ultrasmall N-doped …
evolution reaction (HER) efficiency. Here, a porous carbon network confining ultrasmall N-doped …
Joint power allocation and beamforming for non-orthogonal multiple access (NOMA) in 5G millimeter wave communications
In this paper, we explore non-orthogonal multiple access (NOMA) in millimeter-wave (mm-wave)
communications (mm-wave-NOMA). In particular, we consider a typical problem, ie, …
communications (mm-wave-NOMA). In particular, we consider a typical problem, ie, …