Results 11 to 20 of about 62,673 (306)

Design and simulation of acoustic vortex wave arrays for long-range underwater communication [PDF]

open access: yesJASA Express Letters, 2023
The formation and propagation of acoustic vortex waves have been of increasing interest for multiple applications, namely, underwater acoustic communications. Several methods have been presented to form these vortices in underwater environments; however,
Mark E. Kelly, Chengzhi Shi
doaj   +1 more source

A Non-Contact Vital Signs Detection in a Multi-Channel 77GHz LFMCW Radar System

open access: yesIEEE Access, 2021
The technology of vital signs detection has been proven of great use, whereas it is still limited by several challenges. One of the major challenges is the random body movements (RBMs), which significantly degrade the accuracy of the measurement. In this
Qisong Wu   +4 more
doaj   +1 more source

Analytical performance evaluation of GFDM in underwater acoustic communication systems

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2021
The rapid growth of the Internet of Things (IoT) has extended its concept to underwater environments. However, the implementation of these systems via wired communication still represents a technological challenge, mainly due to the high cost of their ...
Alexander Hilario-Tacuri   +3 more
doaj   +1 more source

Experimental investigations of acoustic field in sea shelf zone [PDF]

open access: yesE3S Web of Conferences, 2020
Developed experimental facility allows one to generate acoustic pressure within the intervals from 105 to 106 Pa with an affective system of matching layers of bottom, water and ice.
Chernenko Vasiliy   +4 more
doaj   +1 more source

The Acoustic System of the Fendouzhe HOV

open access: yesSensors, 2021
Due to the strong absorption and attenuation of electromagnetic waves by water, radio communications and global positioning systems are lacking in the deep-sea environment.
Yeyao Liu   +10 more
doaj   +1 more source

Investigation of the channel for information transfer by electric, electromagnetic and acoustic waves in layered environment with ice cover [PDF]

open access: yesE3S Web of Conferences, 2020
A theoretical model of electromagnetic wave propagation in an ice layer was developed. A half-wave vibrator frozen in an ice layer is used as a receiving-radiating system of electromagnetic waves.
Korochentsev Vladimir   +5 more
doaj   +1 more source

Modeling the Geometry of an Underwater Channel for Acoustic Communication

open access: yesJournal of Telecommunications and Information Technology, 2022
The achievement of efficient data transmissions via underwater acoustic channels, while dealing with large data packets and real-time data fed by underwater sensors, requires a high data rate.
Hala A. Naman, A.E. Abdelkareem
doaj   +1 more source

Design and Analysis of an Optical–Acoustic Cooperative Communication System for an Underwater Remote-Operated Vehicle

open access: yesApplied Sciences, 2022
Underwater wireless communication technology plays a key role in the field of marine equipment technology. In this paper, we experimentally demonstrate an underwater optical–acoustic cooperative communication platform for an underwater wireless data ...
Jun He   +4 more
doaj   +1 more source

Application research of polar coded OFDM underwater acoustic communications

open access: yesEURASIP Journal on Wireless Communications and Networking, 2023
To further accelerate the practical process of polar codes in underwater acoustic communication (UWC) and improve the reliability and efficiency of underwater data transmission, we first propose a polar code construction method suitable for the ...
Yushuang Zhai   +3 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy