Results 11 to 20 of about 5,103,302 (259)
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
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
Recognition of behavior state of Penaeus vannamei based on passive acoustic technology
Frontiers in Marine Science, 2022 Underwater signal processing based on passive acoustic technology has carried out a lot of research on the behavioral sound of underwater creatures and the protection of marine resources, which proves the feasibility of passive acoustic technology for ...
Maochun Wei +3 more
doaj +1 more source
UAN: underwater acoustic network [PDF]
, 2011 Acoustic networks are for underwater what wifi is for terrestrial networks. The ocean is a nearly perfect media for acoustic waves in which regards long range propagation but poses a number of challenges in terms of available bandwidth, Doppler spread ...
Reinen, Tor Arne +7 more
core +2 more sources
Covert underwater acoustic communications
The Journal of the Acoustical Society of America, 2010 Low probability of detection (LPD) communications are conducted at a low received signal-to-noise ratio (SNR) to deter eavesdroppers to sense the presence of the transmitted signal. Successful detection at intended receiver heavily relies on the processing gain achieved by employing the direct-sequence spread-spectrum (DSSS) technique.
Jun Ling +4 more
openaire +2 more sources
Selective Dynamic Coded Cooperative Communications for Multi-Hop Underwater Acoustic Sensor Networks
IEEE Access, 2019 Due to the limitation of acoustic velocity in underwater environments, propagation delay is a horrible problem in multi-hop underwater acoustic sensor networks (UW-ASNs).
Yougan Chen +4 more
doaj +1 more source
An overview of channel coding for underwater acoustic communications [PDF]
MILCOM 2012 - 2012 IEEE Military Communications Conference, 2012 The TRIDENT (TRansmission d'Images et de Donnees EN Temps reeel) project was launched a few years ago by GESMA (Groupe d'Etudes Sous Marine de l'Atlantique). The initial objectives were to develop a multiple-rate underwater acoustic link for images, text and data transmission. Later, the speech option was added, and more recently channel coding options
Trubuil, Joël +2 more
openaire +3 more sources
The Localization Algorithm Based on Symmetry Correction for Underwater Acoustic Networks
IEEE Access, 2019 Underwater localization is an important and fundamental part of the Underwater Acoustic Networks (UANs). The problem we must face is that radio waves and optical waves are heavily attenuated underwater, so acoustic signals become the most common form of ...
Shaochen Zhang +4 more
doaj +1 more source
Nibble-CRC for Underwater Acoustic Communication [PDF]
, 2012 Underwater acoustic sensor networks (UWASNs) are complex in design due to the characteristics of underwater medium. The underwater communication environment and the medium vary on time, geographical location and depth. Sensor nodes are also born with some limitations such as fixed amount of energy, small size memory and node mobility.
Imtiaz Ahmed Khan +2 more
openaire +3 more sources
Environmental-friendly underwater acoustic communication and networks [PDF]
, 2012 Intense harvesting of ocean resources extended exploitation activities to previously unexplored open ocean areas, to greater ocean depths and to remote polar regions. Such activities include, but are not limited to, energy, geology and fisheries.
Jesus, S. M.
core +1 more source