Results 21 to 30 of about 3,511 (202)

UA-MAC: An Underwater Acoustic Channel Access Method for Dense Mobile Underwater Sensor Networks

open access: yesInternational Journal of Distributed Sensor Networks, 2014
The long propagation delay and low data rate characteristics of acoustic communication attach many challenges to underwater wireless sensor networks. In this paper, a TDMA based underwater acoustic channel access method (UA-MAC) is proposed mainly to ...
Chao Lv, Shuo Wang, Min Tan, Lan Chen
doaj   +1 more source

Wireless Sensor Array Network DoA Estimation from Compressed Array Data via Joint Sparse Representation

open access: yesSensors, 2016
A compressive sensing joint sparse representation direction of arrival estimation (CSJSR-DoA) approach is proposed for wireless sensor array networks (WSAN).
Kai Yu   +6 more
doaj   +1 more source

Underwater Wireless Sensor Networks

open access: yesJOIV: International Journal on Informatics Visualization, 2018
There are a plenty of unexploited resources that lies underwater that covers almost 75% of the earth.In order to utilise them,the field of underwater wireless sensor networks (UWSN) is attracting the  researchers to extend their thoughts in this field ...
Sweta S, Balajee Maram
doaj   +1 more source

Enhancement by postfiltering for speech and audio coding in ad hoc sensor networks [PDF]

open access: yesJASA Express Letters, 2021
Enhancement algorithms for wireless acoustic sensor networks (WASNs) are indispensable with the increasing availability and usage of connected devices with microphones.
Sneha Das, Tom Bäckström
doaj   +1 more source

Energy-aware Scheduling of Surveillance in Wireless Multimedia Sensor Networks

open access: yesSensors, 2010
Wireless sensor networks involve a large number of sensor nodes with limited energy supply, which impacts the behavior of their application. In wireless multimedia sensor networks, sensor nodes are equipped with audio and visual information collection ...
Xue Wang   +3 more
doaj   +1 more source

Further simulation testing in CoopMAC-U for underwater acoustic sensor networks

open access: yesJurnal Jaringan Telekomunikasi, 2023
In order for underwater wireless sensor networks to communicate more efficiently, MAC protocols are needed to control the use of acoustic channels. With the high propagation delay and the limited bandwidth available on the acoustic channel, a specially ...
Muhammad Syirajuddin S.   +4 more
doaj   +1 more source

Acoustical ranging techniques in embedded wireless sensor networked devices

open access: yesACM Transactions on Sensor Networks, 2013
Location sensing provides endless opportunities for a wide range of applications in GPS-obstructed environments, where, typically, there is a need for a higher degree of accuracy. In this article, we focus on robust range estimation , an important prerequisite for fine-grained localization.
Misra, Prasant   +4 more
openaire   +4 more sources

A better-performing Q-learning game-theoretic distributed routing for underwater wireless sensor networks

open access: yesInternational Journal of Distributed Sensor Networks, 2018
Underwater sensor networks have recently emerged as a promising networking technique for various underwater applications. However, the acoustic routing of underwater sensor networks in the aquatic environment presents challenges in terms of dynamic ...
Sungwook Kim
doaj   +1 more source

Distributed Deep Learning and Energy-Efficient Real-Time Image Processing at the Edge for Fish Segmentation in Underwater Videos

open access: yesIEEE Access, 2022
Using big marine data to train deep learning models is not efficient, or sometimes even possible, on local computers. In this paper, we show how distributed learning in the cloud can help more efficiently process big data and train more accurate deep ...
Mohammad Jahanbakht   +3 more
doaj   +1 more source

A QoS-Based Topology Control Algorithm for Underwater Wireless Sensor Networks

open access: yesInternational Journal of Distributed Sensor Networks, 2010
The topology control techniques of underwater wireless sensor networks and terrestrial wireless sensor networks are significantly different because of the particularity of underwater environments and acoustic communication.
Linfeng Liu
doaj   +1 more source

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