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SLIM-Detector for Undersampling Preamble in Underwater Acoustic Communications
The preamble is the signal to trigger the receiver to change from the standby mode to the working mode. Preamble detection is a very important part for underwater acoustic communications, since if the preamble signal is not detected or the receiver is ...
Narrowband Interference Cancellation for Index-Modulated TDS-OFDM in Underwater Acoustic Communications
In this extended abstract, the narrowband interference (NBI) cancellation problem is introduced for dual-PN-padded TDS-OFDM signal in underwater acoustic communications. PN sequence is used in differential measuring of interference and payload ...
FIR-Filter: based Ambient Noise Implementation for Acoustic Underwater Communication Analysis
Underwater communication of autonomous underwater vehicles (AUVs) has intense demands on acoustic modems caused by the continually changing signal propagation due to ambient noise, multipath propagation, and other effects of the underwater acoustic ...
Comparison of Underwater Ambient Noise Based on past Two Years Data for Dongshan Offshore
Due to the fluctuation of underwater ambient noise on different receiving stations, we measured the Dongshan Offshore underwater ambient noise in May 2018, which can be used for optimizing transmitting power by adjusting the signal-to-noise (SNR), and ...
Investigation of Typical Methods Applied to Compressive Matched Field Processing
Matched field processing (MFP) is widely studied in ocean acoustic localization. Its solution set is sparse since there are considerably fewer sources than replicas. Thus, we could potentially solve it as a sparse solution reconstruction problem. ...
Underwater Image Denoising via AMP with Renyi Entropy
Approximate message passing (AMP) in wavelet domain has been widely used in image denoising. However, the AMP-based denoising method is not robust to the 'shot noise', which is dynamic and short-period in the wavelet domain. First, a preprocessing ...
CDMA-Based Multi-Domain Communications Network for Marine Robots
This paper reports on a cross-domain communication system for marine robots based on code-division multiple access (CDMA). The underwater communications channel is a difficult transmission medium due to its link quality variability which depends on ...
Development of a Multi-source Energy-Harvesting Buoy for Underwater Acoustic Sensor Networking Application
We present our ongoing work on developing a multi-source energy harvesting buoy that could be used to power underwater acoustic sensor nodes deployed on the surface of a sea or an ocean. The buoy harvests energy from three different sources; wind, solar ...
Omnidirectional Surface Vehicle for Evaluating Underwater Acoustic Communication Performance in Confined Space
This paper presents an omnidirectional surface vehicle (OSV) developed for evaluating underwater acoustic communication performance in confined water space. The OSV features centimeter-level positioning accuracy, onboard waveform probing and generation, ...
Design of a UW-IoT Network Test Platform for Shallow Water Environment
The Underwater Internet of Things (UW-IoT) is a novel class of Internet of Things (IoT) that enables extend the terrestrial internet to the marine environment. However, as the underwater acoustic channel poses extremely challenging difficulties for ...
Sea Experiment for Mobile Underwater Acoustic Networks
Underwater acoustic networks (UWANs) with autonomous underwater vehicles (AUVs) as mobile nodes have the potential to execute many tasks flexibly in the ocean, while the mobility of UWANs introduces many challenges to the design of network protocols. In ...
Empirical Characterization of Vertical Channel in Underwater Visible Light Communication
Ongoing advances in the research and development of visible light communication (VLC) systems has opened up many opportunities for using the concept of light based communication in underwater medium. Water presents a favourable medium for communication ...
Range-extending Optical Transceiver Structure for Underwater Vehicles and Robotics
An underwater optical communication link provides high-speed data transfer between water surface buoys/ships and underwater vehicles for robotics applications. However, currently such optical links are severely limited by the coverage range due to the ...
Self-interference Characterization for In-Band Full Duplex Underwater Acoustic Communications
In-band full duplex (IBFD) communications attracts increasing attention in the underwater acoustic communication community due to its potential to increase spectral efficiency. The suppression of the self-interference remains the main obstacle to ...
Training-based Adaptive Channel Tracking for Correlated Underwater Acoustic Channels
Multipath arrivals in many underwater acoustic channels are cross-correlated due to recent study. By exploiting the cross-correlation of mulipath arrivals, an efficient type of channel tracking for underwater acoustic channel is proposed by decomposing ...
Real-time Image Enhancement for Vision-based Autonomous Underwater Vehicle Navigation in Murky Waters
Classic vision-based navigation solutions, which are utilized in algorithms such as Simultaneous Localization and Mapping (SLAM), usually fail to work underwater when the water is murky and the quality of the recorded images is low. That is because most ...
Compressed Underwater Acoustic Communications for Dynamic Interaction with Underwater Vehicles
Underwater vehicles are utilized in various applications including underwater data-collection missions. The tethered connection constrains the mission both in distance traveled and number of vehicles that can run in the same area, while the addition of ...
Passive Localization for Multi-AUVs by Using Acoustic Signals
In order to maintain a desired formation of multiple autonomous underwater vehicles (multi-AUVs), one important task is to localize all AUVs. This paper addresses a passive localization method which uses the acoustic signals from the support ship and ...
Miniature Underwater Animal Tags and Smart Sensors for Civil Engineering Applications
This paper gives an overview of miniature underwater IoT devices recently developed for civil engineering applications: animal tags and underwater smart sensors. The PNNL (Pacific Northwest National Laboratory) fish tag is a newly developed injectable ...
An Adaptive TDMA-based MAC Protocol for Underwater Acoustic Sensor Networks
Acoustic propagation through water suffers from attenuation that increases with both signal frequency and transmission range, with time-varying long propagation delays. The power spectral density of underwater ambient noise also changes with frequency. ...
A Named Data Networking Architecture Implementation to Internet of Underwater Things
The Internet of Underwater Things (IoUT) advances our ability in exploring oceans, lakes and rivers through multiple communication technologies that connect stationary and mobile nodes underwater, at the surface and in the sky. However, characteristics ...
Pipe Data Through the Water: Stress Wave Communications Along Pipelines
Offshore pipelines are the most popular man-made infrastructures that can be found undersea. Empowered by stress wave communications, these massive pipeline networks can be potentially utilized to deliver information. In this paper, we build up a stress ...
Efficient Faster-Than-Nyquist Transceiver Design for Underwater Acoustic Communications
Faster-than-Nyquist (FTN) signaling is an attractive technology to improve the spectral efficiency. In this paper, an efficient FTN transceiver is proposed for underwater acoustic (UWA) communications. At the transmitter, the FTN signaling is ...
Turbo Equalization for Underwater Acoustic Faster-than-Nyquist Signaling System
Underwater acoustic communications (UAC) is the main technical means for underwater cableless transmission. Due to the serious multi-path, time-varying and Doppler effects of underwater acoustic channel (UWAC), the received signals are overlapped and ...
On Connectivity of Wireless Underwater Sensor Networks Using MI-assisted Acoustic Distributed Beamforming
In wireless underwater sensor networks (WUSNs), network connectivity is one of the most fundamental problems as it can directly impact the network lifetime and operation. Distributed beamforming can improve the connectivity by extending the ...
An LSTM based Kalman Filter for Spatio-temporal Ocean Currents Assimilation
In this paper, we present a Long Short-Term Memory (LSTM)-based Kalman Filter for data assimilation of a 2D spatio-temporally varying depth-averaged ocean flow field for underwater glider path planning. The data source to the filter combines both the ...
A Comparison of Kriging and Cokriging for Estimation of Underwater Acoustic Communication Performance
Mobile underwater communication network nodes, such as autonomous underwater vehicles, can use estimates of underwater acoustic communication performance to anticipate where they are likely to be connected to the communication network. In this paper, we ...
A Stratified Linear Sound Speed Profile Simplification Method for Localization Correction
Localization is important for underwater sensor networks as the validity of data and the maintenance of nodes both need location information. Because of the Snell effect caused by non-uniform distribution of sound speed, the signal propagation path is ...
Index Terms
- Proceedings of the 14th International Conference on Underwater Networks & Systems
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Acceptance Rates
Year | Submitted | Accepted | Rate |
---|---|---|---|
WUWNet '18 | 23 | 11 | 48% |
WUWNet '16 | 75 | 53 | 71% |
WUWNet '14 | 27 | 9 | 33% |
WUWNet '13 | 55 | 11 | 20% |
Overall | 180 | 84 | 47% |