390 citations · 918 across the 48 of their papers we have counts for
44 papers · 1 filter
Multiuser Offloading with Cloud Server Data
Jinho Choi
Computation offloading becomes useful for users of limited computing power and mobile edge computing (MEC) can help mobile users perform their tasks more effectively. In this paper…
Understand-Before-Talk (UBT): A Semantic Communication Approach to 6G Networks
Shiva Raj Pokhrel, Jinho Choi
In Shannon theory, semantic aspects of communication were identified but considered irrelevant to the technical communication problems. Semantic communication (SC) techniques have…
Semantic Communication as a Signaling Game with Correlated Knowledge Bases
Jinho Choi, Jihong Park
Semantic communication (SC) goes beyond technical communication in which a given sequence of bits or symbols, often referred to as information, is be transmitted reliably over a no…
Data-aided Sensing where Communication and Sensing Meet: An Introduction
Jinho Choi
Since there are a number of Internet-of-Things (IoT) applications that need to collect data sets from a large number of sensors or devices in real-time, sensing and communication n…
Sliding Network Coding for URLLC
Jinho Choi
In this paper, we propose a network coding (NC) based approach to ultra-reliable low-latency communication (URLLC) over erasure channels. In transmitting multiple data packets, we…
On Throughput Bounds of NOMA-ALOHA
Jinho Choi
In this paper, we focus on the throughput of random access with power-domain non-orthogonal multiple access (NOMA) and derive bounds on the throughput. In particular, we demonstrat…
Next Generation Mega Satellite Networks: Opportunities, Challenges, and Performance
Bassel Al Homssi, Akram Al-Hourani, Ke Wang +5
Digital connectivity has become the foundation of prosperity and an essential need for functioning societies. Despite this dependence, limitation on Internet access remains a preva…
Antenna Array Enabled Space/Air/Ground Communications and Networking for 6G
Zhenyu Xiao, Zhu Han, Arumugam Nallanathan +5
Antenna arrays have a long history of more than 100 years and have evolved closely with the development of electronic and information technologies, playing an indispensable role in…
Communication-Efficient Distributed SGD using Preamble-based Random Access
Jinho Choi
In this paper, we study communication-efficient distributed stochastic gradient descent (SGD) with data sets of users distributed over a certain area and communicating through wire…
Performance Analysis of 2-Step Random Access with CDMA in Machine-Type Communication
Jinho Choi
There is a growing interest in the transition from 4-step random access to 2-step random access in machine-type communication (MTC), since 2-step random access is well-suited to sh…
Grant-Free Random Access in Machine-Type Communication: Approaches and Challenges
Jinho Choi, Jie Ding, Ngoc Phuc Le +1
Massive machine-type communication (MTC) is expected to play a key role in supporting Internet of Things (IoT) applications such as smart cities, smart factory, and connected vehic…
Data-aided Sensing for Gaussian Process Regression in IoT Systems
Jinho Choi
In this paper, for efficient data collection with limited bandwidth, data-aided sensing is applied to Gaussian process regression that is used to learn data sets collected from sen…
Data-aided Sensing for Distributed Detection
Jinho Choi
In this paper, we study data-aided sensing (DAS) for distributed detection in wireless sensor networks (WSNs) when sensors' measurements are correlated. In particular, we derive a…
Explore-Before-Talk: Multichannel Selection Diversity for Uplink Transmissions in Machine-Type Communication
Jinho Choi, Jihong Park, Shiva Pokhrel
Improving the data rate of machine-type communication (MTC) is essential in supporting emerging Internet of things (IoT) applications ranging from real-time surveillance to edge ma…
An Approach to Preamble Collision Reduction in Grant-Free Random Access with Massive MIMO
Jinho Choi
In this paper, we study grant-free random access with massive multiple input multiple output (MIMO) systems. We first show that the performance of massive MIMO based grant-free ran…
Re-Transmission Diversity Multiple Access based on SIC and HARQ-IR
Jinho Choi
We consider multiple access with re-transmission diversity (RTxD) based on a hybrid automatic request (HARQ) protocol with incremental redundancy (IR) in this paper. In order to mi…
Random Access with Layered Preambles based on NOMA for Two Different Types of Devices in MTC
Jinho Choi
In machine-type communication (MTC), random access has been employed for a number of devices and sensors to access uplink channels using a pool of preambles. To support different p…
On Throughput Improvement using Immediate Re-transmission in Grant-Free Random Access with Massive MIMO
Jinho Choi
To support machine-type communication (MTC), massive multiple-input multiple-output (MIMO) has been considered for grant-free random access. In general, the performance of grant-fr…
On Improving Throughput of Multichannel ALOHA using Preamble-based Exploration
Jinho Choi
Machine-type communication (MTC) has been extensively studied to provide connectivity for devices and sensors in the Internet-of-Thing (IoT). Thanks to the sparse activity, random…
On Fast Retrial for Two-Step Random Access in MTC
Jinho Choi
In machine-type communication (MTC), a group of devices or sensors may need to send their data packets with certain access delay limits for delay-sensitive applications or real-tim…
Repetition-based NOMA Transmission and Its Outage Probability Analysis
Jinho Choi
In this paper, we discuss a non-orthogonal multiple access (NOMA) scheme to exploit a high diversity gain using repetition, namely repetition-based NOMA. Unlike conventional power-…
On Throughput of Compressive Random Access for One Short Message Delivery in IoT
Jinho Choi
In this paper, we study compressive random access (CRA) with two stages for machine-type communication (MTC) in cellular Internet-of-Things (IoT). In particular, we consider the ca…
Multichannel ALOHA with Exploration Phase
Jinho Choi
In this paper, we consider exploration for multichannel ALOHA by transmitting preambles before transmitting data packets and show that the maximum throughput can be improved by a f…
Federated learning with multichannel ALOHA
Jinho Choi, Shiva Raj Pokhrel
In this paper, we study federated learning in a cellular system with a base station (BS) and a large number of users with local data sets. We show that multichannel random access c…