Massive access for 5G and beyond

X Chen, DWK Ng, W Yu, EG Larsson… - IEEE Journal on …, 2020 - ieeexplore.ieee.org
Massive access, also known as massive connectivity or massive machine-type
communication (mMTC), is one of the main use cases of the fifth-generation (5G) and …

DeepNOMA: A unified framework for NOMA using deep multi-task learning

N Ye, X Li, H Yu, L Zhao, W Liu… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
Non-orthogonal multiple access (NOMA) will provide massive connectivity for future Internet
of Things. However, the intrinsic non-orthogonality in NOMA makes it non-trivial to approach …

Physical layer security for massive access in cellular Internet of Things

Q Qi, X Chen, C Zhong, Z Zhang - Science China Information Sciences, 2020 - Springer
The upcoming fifth generation (5G) cellular network is required to provide seamless access
for a massive number of Internet of Things (IoT) devices over the limited radio spectrum. In …

[HTML][HTML] Help from space: Grant-free massive access for satellite-based IoT in the 6G era

N Ye, J Yu, A Wang, R Zhang - Digital Communications and Networks, 2022 - Elsevier
Abstract The Sixth-Generation (6G) standard for wireless communications is expected to
realize ubiquitous coverage for massive Internet of Things (IoT) networks by 2030. Satellite …

EP-based joint active user detection and channel estimation for massive machine-type communications

J Ahn, B Shim, KB Lee - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
Massive machine-type communication (mMTC) is a newly introduced service category in 5G
wireless communication systems to support a variety of Internet-of-Things (IoT) applications …

Compressive sensing-based joint activity and data detection for grant-free massive IoT access

Y Mei, Z Gao, Y Wu, W Chen, J Zhang… - IEEE Transactions …, 2021 - ieeexplore.ieee.org
Massive machine-type communications (mMTC) are poised to provide ubiquitous
connectivity for billions of Internet-of-Things (IoT) devices. However, the required low-latency …

Active terminal identification, channel estimation, and signal detection for grant-free NOMA-OTFS in LEO satellite Internet-of-Things

X Zhou, K Ying, Z Gao, Y Wu, Z Xiao… - IEEE Transactions …, 2022 - ieeexplore.ieee.org
This paper investigates the massive connectivity of low Earth orbit (LEO) satellite-based
Internet-of-Things (IoT) for seamless global coverage. We propose to integrate the grant-free …

A dimension reduction-based joint activity detection and channel estimation algorithm for massive access

X Shao, X Chen, R Jia - IEEE Transactions on Signal …, 2019 - ieeexplore.ieee.org
Grant-free random access is a promising protocol to support massive access in beyond fifth-
generation (B5G) cellular Internet-of-Things (IoT) with sporadic traffic. Specifically, in each …

Active user detection and channel estimation for massive machine-type communication: Deep learning approach

Y Ahn, W Kim, B Shim - IEEE Internet of Things Journal, 2021 - ieeexplore.ieee.org
Recently, massive machine-type communications (mMTCs) have become one of key use
cases for 5G. In order to support massive users transmitting small data packets at low rates …

Grant-free access via bilinear inference for cell-free MIMO with low-coherence pilots

H Iimori, T Takahashi, K Ishibashi… - IEEE Transactions …, 2021 - ieeexplore.ieee.org
We propose a novel joint activity, channel and data estimation (JACDE) scheme for multiple-
input multiple-output (MIMO) systems. The contribution aims to allow significant overhead …