Results 11 to 20 of about 68,396 (264)

Underwater Acoustic Communication Channel Modeling using Deep Learning [PDF]

open access: yesWorkshop/Conference on Underwater Networks & Systems, 2021
With the recent increase in the number of underwater activities, having effective underwater communication systems has become increasingly important.
Oluwaseyi Onasami   +2 more
semanticscholar   +1 more source

An Energy Optimization Clustering Scheme for Multi-Hop Underwater Acoustic Cooperative Sensor Networks

open access: yesIEEE Access, 2020
In this paper, we propose an improved energy optimization clustering algorithm (EOCA) for the multi-hop underwater acoustic cooperative sensor networks (UWA-CSN) due to the limited energy supply of the underwater sensor nodes.
Weijian Yu   +5 more
doaj   +1 more source

Automatic Modulation Classification for Underwater Acoustic Communication Signals Based on Deep Complex Networks

open access: yesEntropy, 2023
Automatic modulation classification (AMC) is an important method for monitoring and identifying any underwater communication interference. Since the underwater acoustic communication scenario is full of multi-path fading and ocean ambient noise (OAN ...
Xiaohui Yao, Honghui Yang, Meiping Sheng
semanticscholar   +1 more source

ACOA-AFSA Fusion Dynamic Coded Cooperation Routing for Different Scale Multi-Hop Underwater Acoustic Sensor Networks

open access: yesIEEE Access, 2020
The limited energy supply of underwater nodes is one of the key issues for the multi-hop underwater acoustic sensor networks (UWA-SN). In this paper, the fusion scheme based on ant colony optimization algorithm (ACOA), artificial fish swarm algorithm ...
Yougan Chen   +5 more
doaj   +1 more source

Deep reinforcement learning-based adaptive modulation for OFDM underwater acoustic communication system

open access: yesEURASIP Journal on Advances in Signal Processing, 2023
Due to the time-varying and space-varying characteristics of the underwater acoustic channel, the communication process may be seriously disturbed. Thus, the underwater acoustic communication system is facing the challenges of alleviating interference ...
Xuerong Cui   +4 more
semanticscholar   +1 more source

Modulation Signal Recognition of Underwater Acoustic Communication Based on Archimedes Optimization Algorithm and Random Forest

open access: yesItalian National Conference on Sensors, 2023
This paper researches the recognition of modulation signals in underwater acoustic communication, which is the fundamental prerequisite for achieving noncooperative underwater communication.
Maofa Wang, Zhenjing Zhu, Gaofeng Qian
semanticscholar   +1 more source

Study on Feeding Activity of Litopenaeus Vannamei Based on Passive Acoustic Detection

open access: yesIEEE Access, 2020
Litopenaeus vannamei, as the main target of shrimp farming in China, has a great market prospect and high economic value. However, domestic Litopenaeus vannamei farming and feeding efficiency are low, mainly through the use of hand tools by farmers to ...
Maochun Wei   +4 more
doaj   +1 more source

A Modulation Recognition System for Underwater Acoustic Communication Signals Based on Higher-Order Cumulants and Deep Learning

open access: yesJournal of Marine Science and Engineering, 2023
Underwater acoustic channels, influenced by time-varying, space-varying, frequency-varying, and multipath effects, pose significant interference challenges to underwater acoustic communication (UWAC) signals, especially in non-cooperative scenarios.
Run Zhang   +5 more
semanticscholar   +1 more source

Adaptive Underwater Acoustic Communications [PDF]

open access: yes, 2010
Underwater 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. The underwater acoustic channel is plagued with issues of high transmission power requirements, rapidly changing channel ...
Anuj Sehgal, Jürgen Schönwälder
openaire   +1 more source

Deep learning microphone array speech enhancement for multiple speaker separation

open access: yesDianzi Jishu Yingyong, 2022
With the increase of human-computer voice interaction scenes in recent years, using microphone array speech enhancement to improve speech quality has become one of the research hotspots.
Zhang Jiayang   +3 more
doaj   +1 more source

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