Results 1 to 10 of about 262 (112)

A Novel Random Access Algorithm for Very High Frequency Data Exchange (VDE)

Journal of Marine Science and Engineering, 2020
VHF Data Exchange System (VDES) is considered as an important component of the future maritime communication system by the International Maritime Organization (IMO).
Yi Jiang, Yang Zheng, Junsen Wang
doaj   +2 more sources

On Achieving High-Fidelity Grant-Free Non-Orthogonal Multiple Access

IEEE Open Journal of the Communications Society
Grant-free access (GFA) has been envisioned to play an active role in massive Machine Type Communication (mMTC) under 5G and Beyond mobile systems, which targets at achieving significant reduction of signaling overhead and access latency in the presence ...
Haoran Mei, Limei Peng, Pin-Han Ho
doaj   +2 more sources

Comprehensive Review of Community Seismic Resilience: Concept, Frameworks, and Case Studies

Advances in Civil Engineering, Volume 2022, Issue 1, 2022., 2022
Seismic resilience is a concept to evaluate the postearthquake functionality of structures that significantly play a critical role in postearthquake rescue and recovery. Indeed, the community is made up of more than just buildings; it is also made up of other subsystems such as hospital and school facilities as well as roads, drainage systems, sewer ...
H’ng Chee Yin, Moustafa Moufid Kassem, Fadzli Mohamed Nazri, Alessandro Rasulo   +3 more
wiley   +1 more source

Randomly Pre-Coded Packets Based Random Access Scheme for IoT-Oriented Satellite Networks

IEEE Access, 2020
In this article, a novel random pre-coding (RPC) based random access (RA) scheme is proposed to improve the system performance in the Internet of Things-oriented satellite networks.
Jingrui Su, Guangliang Ren, Qiwei Wang, Huining Zhang   +3 more
doaj   +1 more source

Adaptive Packet-Length Assisted Random Access Scheme in LEO Satellite Network

IEEE Access, 2019
A new adaptive packet-length assisted random access (RA) scheme is proposed to improve the performance of the RA system in LEO satellite network. In the scheme, the lengths of data packets are adaptively selected with different modulation and coding ...
Jialing Bai, Guangliang Ren
doaj   +1 more source

BP Network Control for Resource Allocation and QoS Ensurance in UAV Cloud

Journal of Sensors, Volume 2018, Issue 1, 2018., 2018
Unmanned aerial vehicle (UAV) cloud can greatly enhance the intelligence of unmanned systems by dynamically unloading the compute‐intensive applications to cloud. For the uncertain nature of UAV missions and fast‐changing environment, different UAV applications may have different quality of service (QoS) requirements.
Ang Gao, Yansu Hu, Lixin Li, Xu Li, Raymond Swartz   +4 more
wiley   +1 more source

Uplink Nonorthogonal Multiple Access Technologies Toward 5G: A Survey

Wireless Communications and Mobile Computing, Volume 2018, Issue 1, 2018., 2018
Owing to the superior performance in spectral efficiency, connectivity, and flexibility, nonorthogonal multiple access (NOMA) is recognized as the promising access protocol and is now undergoing the standardization process in 5G. Specifically, dozens of NOMA schemes have been proposed and discussed as the candidate multiple access technologies for the ...
Neng Ye, Hangcheng Han, Lu Zhao, Ai-hua Wang, Giovanni Stea   +4 more
wiley   +1 more source

Polarized MIMO Slotted ALOHA Random Access Scheme in Satellite Network

IEEE Access, 2017
The massive number of the machine type communication terminals accessing the satellite network brings a new challenge for the random access (RA) system.
Jialing Bai, Guangliang Ren
doaj   +1 more source

Multi-Agent Quantum Reinforcement Learning for Adaptive Transmission in NOMA-Based Irregular Repetition Slotted ALOHA

IEEE Open Journal of the Communications Society
This paper proposes a Multi-Agent Quantum Deep Reinforcement Learning (MA-QDRL) framework to optimize uplink access in Irregular Repetition Slotted ALOHA with Non-Orthogonal Multiple Access (IRSA-NOMA) systems under practical constraints such as finite ...
Won Jae Ryu, Jae-Min Lee, Dong-Seong Kim
doaj   +1 more source

The Nearly Boolean Nature of Core Regular Double Sone Algebras, CRDSA (Ternary Set Partitions, CRDSA, Embeddings and Dual Equivalences)

, 2018
In "Centre of Core Regular Double Stone Algebra" (CRDSA), many useful results are shown that begin to indicate the nearly Boolean nature of CRDSA which we focus on here. We define the node set lattice through the well known binary operations of ternary set partitions and show the resultant lattice is isomorphic to C3^J where C3 is the 3 element chain ...
openaire   +2 more sources