Results 31 to 40 of about 5,516 (118)

Performance Analysis of Cooperative Pattern Division Multiple Access (Co-PDMA) in Uplink Network

IEEE Access, 2017
As a promising candidate non-orthogonal multiple access scheme for the fifth generation (5G) wireless communication system, pattern division multiple access (PDMA) has received considerable attention recently.
Wanwei Tang, Shaoli Kang, Bin Ren
doaj   +1 more source

Proactive Dual Connectivity for Automated Guided Vehicles in Outdoor Industrial Environment

IEEE Access, 2022
5G communication systems are one of the major enabling technologies to meet the needs of Industry 4.0. This paper focuses on the use case of automated guided vehicles (AGVs) in an outdoor industrial scenario.
Jessica Mendoza, Istvan Z. Kovacs, Melisa Lopez, Troels B. Sorensen, Ramoni Adeogun, Isabel De-La-Bandera, Raquel Barco   +6 more
doaj   +1 more source

The Uplink Visible Light Communication Beacon System for Universal Traffic Management

IEEE Access, 2017
This paper presents a feasibility study of the uplink visible light communication (VLC) beacon system for the universal traffic management system (UTMS). The UTMS is a traffic management system beneath the National Police Agency of Japan.
Takaya Yamazato, Naoaki Kawagita, Hiraku Okada, Toshiaki Fujii, Tomohiro Yendo, Shintaro Arai, Koji Kamakura   +6 more
doaj   +1 more source

Outage Probability Analysis for NOMA Downlink and Uplink Communication Systems With Generalized Fading Channels

IEEE Access, 2020
This work considers multiple user power-domain non-orthogonal multiple access (NOMA)based downlink (DL) and uplink (UL) communication systems with potentially dissimilar fading links for all the users that can follow one of several possible distributions
Akash Agarwal, Rishabh Chaurasiya, Sudhakar Rai, Aditya K. Jagannatham   +3 more
doaj   +1 more source

Distributed Precoding for BER Minimization With PAPR Constraint in Uplink Massive MIMO Systems

IEEE Access, 2018
Precoding can effectively reduce the peak-to-average power ratio (PAPR) of the transmitted waveform but will usually degrade the bit error rate (BER) performance.
Wei Peng, Lu Zheng, Da Chen, Chunxing Ni, Tao Jiang   +4 more
doaj   +1 more source

Performance Evaluation of Random Access Methods for IoT-over-Satellite

Remote Sensing, 2022
Low Earth orbit (LEO) satellite constellations are currently being explored to provide global and seamless coverage for IoT-over-Satellite applications. Random access techniques require low transmission overhead providing a compatible route for IoT-over ...
Chiu Chun Chan, Bassel Al Homssi, Akram Al-Hourani   +2 more
doaj   +1 more source

A dynamic uplink random access method based on non-orthogonal multiple access technology

Nantong Daxue xuebao. Ziran kexue ban
To address access collisions caused by massive user access in networks, a dynamic uplink random access method based on non-orthogonal multiple access(NOMA) is proposed.
YANG Jing; LIU Yuxin; GAO Rui; ZHAO Jing; DONG Zhicheng; ZHANG Zhenghua
doaj   +1 more source

A Survey on LTE/LTE-A Radio Resource Allocation Techniques for Machine-to-Machine Communication for B5G Networks

IEEE Access, 2021
Machine-to-Machine (M2M) communication refers to autonomous communication among devices that aims for a massive number of connected devices. M2M communication can support ubiquitous communication and full mechanical automation, and it will change ...
Upendra Singh, Amit Dua, Sudeep Tanwar, Neeraj Kumar, Mamoun Alazab   +4 more
doaj   +1 more source

Intelligent Energy Efficiency Maximization for Wirelessly-Powered UAV-Assisted Secure Sensor Network

Sensors
The rapid proliferation of Internet of Things (IoT) devices and applications has led to an increasing demand for energy-efficient and secure communication in wireless sensor networks.
Fang Xu, Xinyu Zhang
doaj   +1 more source

Users First: A Robust Two-Level Learning of Power Control in Uplink Ultra-Dense HetNets

IEEE Access, 2020
In this article, power control of uplink connection in the ultra-dense heterogeneous networks (HetNets), which are studied as different types of access points (APs), is investigated.
Meruyert Makhanbet, Tiejun Lv
doaj   +1 more source