Results 51 to 60 of about 3,513,631 (178)

ALOHA Random Access that Operates as a Rateless Code [PDF]

open access: yes, 2013
Various applications of wireless Machine-to-Machine (M2M) communications have rekindled the research interest in random access protocols, suitable to support a large number of connected devices.
Popovski, Petar, Stefanovic, Cedomir
core   +2 more sources

Uplink Non-Orthogonal Multiple Access with Channel Estimation Errors for Internet of Things Applications

open access: yesSensors, 2019
One of the key requirements for next generation wireless or cellular communication systems is to efficiently support a large number of connections for Internet of Things (IoT) applications, and uplink non-orthogonal multiple access (NOMA) schemes can be ...
Minjoong Rim, Chung G. Kang
doaj   +1 more source

Research on Random Access of Satellite Internet of Things Based on Load Prediction

open access: yes天地一体化信息网络, 2023
In the process of the vigorous development of satellite internet of things, random access protocol is regarded as the most suitable communication protocol due to its characteristics of low signaling overhead, high transmission efficiency, high ...
Xiwen MAO, Haitao WANG, Gengxin ZHANG
doaj  

An Intelligent Load Control-Based Random Access Scheme for Space-Based Internet of Things

open access: yesSensors, 2021
Random access is one of the most competitive multiple access schemes for future space-based Internet of Things (S-IoT) due to its support for massive connections and grant-free transmission, as well as its ease of implementation.
Changjiang Fei   +4 more
doaj   +1 more source

Architectures for a quantum random access memory

open access: yes, 2008
A random access memory, or RAM, is a device that, when interrogated, returns the content of a memory location in a memory array. A quantum RAM, or qRAM, allows one to access superpositions of memory sites, which may contain either quantum or classical ...
A. Ambainis   +10 more
core   +1 more source

Quantum advantages in random access codes

open access: yesNew Journal of Physics
A random access code (RAC), corresponding to a communication primitive with various applications in quantum information theory, is an instance of a preparation-and-measurement scenario.
Andris Ambainis   +4 more
doaj   +1 more source

A Poisson Process-Based Random Access Channel for 5G and Beyond Networks

open access: yesMathematics, 2021
The 5th generation (5G) wireless networks propose to address a variety of usage scenarios, such as enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable low-latency communications (URLLC). Due to the exponential
Alaa Omran Almagrabi   +4 more
doaj   +1 more source

Performance Enhancements for Asynchronous Random Access Protocols over Satellite [PDF]

open access: yes, 2011
In this paper, a novel enhancement of the well known ALOHA random access mechanism is presented which largely extends the achievable throughput compared to traditional ALOHA and provides significantly lower packet loss rates. The novel mechanism, called
Kissling, Christian
core   +1 more source

Research on Random Access Technology of Inter-Frame Interference Cancellation for 6G Satellite Internet of Things

open access: yes天地一体化信息网络, 2021
In 6G, one of the important application scenarios is ultra-massive machinetype communications, which is mainly oriented to the application scenarios of concurrent access of massive terminals such as the satellite Internet of Things.How to design an ...
Yu XU, Qing GUO
doaj  

Recent Advances in Design and Implementation of Satellite Gateways for Massive Uncoordinated Access Networks

open access: yesSensors, 2022
This paper provides an overview of recent results of a design, development and performance evaluation study of satellite gateways to receive and manage the traffic from a large population of uncoordinated user terminals.
Agostino Isca   +3 more
doaj   +1 more source

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