Results 1 to 10 of about 1,084 (116)
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
Underwater Accompanying Robot Based on SSDLite Gesture Recognition
Applied Sciences, 2022 Underwater robots are often used in marine exploration and development to assist divers in underwater tasks. However, the underwater robots on the market have some problems, such as only a single function of object detection or tracking, the use of ...
Tingzhuang Liu +3 more
doaj +1 more source
IEEE 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
IEEE 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
Study on Feeding Activity of Litopenaeus Vannamei Based on Passive Acoustic Detection
IEEE 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
Adaptive Underwater Acoustic Communications [PDF]
, 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
Anti-Multipath Orthogonal Chirp Division Multiplexing for Underwater Acoustic Communication
IEEE Access, 2020 Multipath due to reflections of the sea surface, seabed, and obstacles, as well as inhomogeneity within the ocean, is an important characteristic of underwater acoustic channels. Mutual interference among multiple paths causes severe amplitude fading and
Peibin Zhu +4 more
doaj +1 more source
Deep learning microphone array speech enhancement for multiple speaker separation
Dianzi 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
Research on Multi-AUVs Data Acquisition System of Underwater Acoustic Communication Network
Sensors, 2022 In order to meet the needs of large-scale underwater operations, the underwater acoustic communication network emerged, marking a historic moment. At the same time, the development of artificial intelligence has promoted the application of intelligent ...
Chunxian Gao, Wenwen Hu, Keyu Chen
doaj +1 more source
Reinforcement Learning-Based Adaptive Modulation and Coding for Efficient Underwater Communications
IEEE Access, 2019 In this paper, we propose a reinforcement learning-based adaptive modulation and coding scheme for underwater communications; more specifically, based on the network states such as the quality of service requirement of the sensing message, the previous ...
Wei Su +4 more
doaj +1 more source