Results 11 to 20 of about 3,620 (223)
Adaptive Underwater Acoustic Communications [PDF]
, 2010 International audienceUnderwater wireless networks consist of mobile and static nodes, which usually communicate using the acoustic channel since radio transmissions attenuate rapidly and optical communication is only suitable for short distances.
Anuj Sehgal +3 more
core +3 more sources
Cooperative underwater acoustic communications [PDF]
IEEE Commun. Mag., 2013 This article presents a contemporary overview of underwater acoustic communication (UWAC) and investigates physical layer aspects on cooperative transmission techniques for future UWAC systems.
Duman, T. +4 more
core +4 more sources
Acoustic Parametric Signal Generation for Underwater Communication [PDF]
Sensors, 2018 This paper presents a study of different types of parametric signals with application to underwater acoustic communications. In all the signals, the carrier frequency is 200 kHz, which corresponds to the resonance frequency of the transducer under study ...
María Campo-Valera +6 more
doaj +4 more sources
CDMA for Underwater Acoustic Communication
CoRR, 2021 This paper provides an overview of how and why acoustic waves are important for underwater communication when compared with radio and optical waves, underwater acoustic channel, it's characteristics and model. Also about the underwater sensor architecture, challenges faced by sensor nodes in the network and Media Acess Control(MAC) protocol solutions ...
Lokesh Bommisetty +4 more
openaire +2 more sources
Experimental investigations of acoustic field in sea shelf zone [PDF]
E3S 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
Sensors, 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
Modeling the Geometry of an Underwater Channel for Acoustic Communication
Journal 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
Investigation of the channel for information transfer by electric, electromagnetic and acoustic waves in layered environment with ice cover [PDF]
E3S 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
Applied 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
Hadamard–Viterbi Joint Soft Decoding for MFSK Underwater Acoustic Communications
Remote Sensing, 2022 Multiple Frequency-Shift Keying (MFSK) has been used widely for underwater acoustic communications due to its low complexity and channel robustness.
Fei-Yun Wu +3 more
doaj +1 more source