Results 21 to 30 of about 2,860,766 (265)

LEO Mega-Constellations for 6G Global Coverage: Challenges and Opportunities

IEEE Access, 2021
Mega-constellations have the potential for providing 6G Internet owing to the unique advantage of global coverage. However, current satellite technologies are not omnipotent.
Haoran Xie, Yafeng Zhan, Guanming Zeng, Xiaohan Pan   +3 more
doaj   +1 more source

Time-Hopping Concentration-Position Shift Keying for Multiple Access in Concentration-Encoded Molecular Communication

Applied Sciences
Molecular communication (MC) represents a paradigm shift in communication technologies, extending beyond traditional electromagnetic methods by incorporating advances in nanotechnology, biotechnology, and communication theory.
Su-Jin Kim, Pankaj Singh, Sung-Yoon Jung
doaj   +1 more source

Wireless Multiple Access Network With a Sectional Configured Data Collection System and Codeword Filtering Mechanism

IEEE Access, 2020
Swarm robotics is an approach to collective robotics with which it is easily possible to complete the tasks that are difficult to do with single robot. The wireless multiple access network contributes significantly in wireless mobile swarm robotics for ...
Wei Zhang, Yuwei Hu, Yongjian Ren, Yangyang Bai   +3 more
doaj   +1 more source

Deep Reinforcement Learning-Based Multi-Access in Massive Machine-Type Communication

IEEE Access
The diverse applications of Machine-Type Communication (MTC) lead to exponential growth in Machine to Machine traffic. In connection with MTC deployment, a large number of devices are expected to access the wireless network simultaneously, resulting in ...
Nasim Ravi, Nuno Lourenco, Marilia Curado, and Edmundo Monteiro   +3 more
doaj   +1 more source

A Multiple Access Protocol Based on Gray Forecast for Satellite Network

Future Internet, 2018
A satellite network’s multiple access protocol must be well designed to efficiently occupy channel resources and meet various qualities of service requirements. In this paper, a combined free/demand assignment multiple access protocol based on gray
Chong Han, Zilong Li, Jian Zhou, Lijuan Sun, Siyu Chen   +4 more
doaj   +1 more source

A Survey on Fluid Antenna Multiple Access for 6G: A New Multiple Access Technology That Provides Great Diversity in a Small Space

IEEE Access
In recent times, a fluid antenna system (FAS) has gained attention as a potential contender for 6G wireless networks. Fluid antenna multiple access (FAMA) is a new technology that allows each user to constantly move to the position with the strongest ...
A. F. M. Shahen Shah, Muhammet Ali Karabulut, Eyup Cinar, Khaled M. Rabie   +3 more
doaj   +1 more source

Multi-Users Dynamic Bandwidth Allocation Technology of SDTN

天地一体化信息网络, 2022
The TT＆amp;C and data transmission of spacecraft are divided into two methods: space-based and ground-based.Among them, space-based method has the advantages of global coverage, access at any time, and real-time information return, and have a wide range ...
Jianxiang CHU, Yin HUANG, Chong WANG, Yunze CAO   +3 more
doaj  

Guiding Multiple Sclerosis Care: An Update to the 2013 Consensus Statement from the MS in the 21st Century Steering Group

Neurology and Therapy
Introduction In 2013, the “MS in the 21st Century” (MS21) initiative established a consensus statement for multiple sclerosis (MS) standards of care, with an overall vision including “Full access to personalised treatment, with reimbursement, to achieve ...
Raed Alroughani, Elisabeth G. Celius, Helen Gray, Elisabeth Kasilingam, Paola Kruger, Amanda Montague, Celia Oreja-Guevara, Amber Plant, Maija Pontaga, Peter Rieckmann, Leslie Ritter, Marja-Liisa Sumelahti   +11 more
doaj   +1 more source

Stressful Events Reported by Childhood Cancer Survivors and Community Controls From the St. Jude Lifetime (SJLIFE) Cohort: A Mixed Method Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Characterizing stressful events reported by childhood cancer survivors experienced throughout the lifespan may help improve trauma‐informed care relevant to the survivor experience. Methods Participants included 2552 survivors (54% female; 34 years of age) and 469 community controls (62% female; 33 years of age) from the St.
Megan E. Ware, Colter K. Clayton, Fang Wang, Sedigheh Mirzaei, Kyla Shelton, Tara M. Brinkman, Victoria Willard, Katianne M. Howard Sharp, Kevin Krull, Lindsay F. Schwartz, Melissa M. Hudson, Gregory T. Armstrong, Kirsten K. Ness, Rachel T. Webster   +13 more
wiley   +1 more source

Orthogonal Chirp-Based Ultrasonic Positioning

Sensors, 2017
This paper presents a chirp based ultrasonic positioning system (UPS) using orthogonal chirp waveforms. In the proposed method, multiple transmitters can simultaneously transmit chirp signals, as a result, it can efficiently utilize the entire available ...
Mohammad Omar Khyam, Shuzhi Sam Ge, Xinde Li, Mark Pickering   +3 more
doaj   +1 more source