underwater acoustic data communications
Novel adaptive signal processing techniques for underwater acoustic communications
... Broadband (or multi-frequency) MFP has been actively investigated in the past two decades [33–38, 92, 96]. Coherent combining of ambiguity surfaces obtained at different frequencies provides better performance compared ...
156
Soft-Decision-Driven Sparse Channel Estimation and Turbo Equalization for MIMO Underwater Acoustic Communications
... Abstract—Multi-input multi-output (MIMO) detection based on turbo principle has been shown to provide a great enhance- ment in the throughput and reliability of underwater acoustic (UWA) communication ...
19
[N197.Ebook] Download Ofdm For Underwater Acoustic Communications By Shengli Zhou Zhaohui Wang.pdf
... to underwater OFDM, is arranged into four distinct sections: First, it describes the characteristics of underwater acoustic channels, and stresses the difference from wireless radio ...experimental ...
6
Implementation of Neighbor Discovery Protocol for Underwater Acoustic Communications
... The exhaustive works have been carried out for node discovery in the terrestrial sensor networks. The work in [6] proposes a Polling based MAC protocol (PMAC) for mobile ad hoc networks. The PMAC exclusively uses ...
10
Advanced OFDM Receivers for Underwater Acoustic Communications
... a data package and estimation of the time difference between their arrivals, transformed into the time-compression factor [26, 95, ...the data package, which is often not the case with a fast-moving and ...
147
Routing Protocols for Underwater Wireless Sensor Networks
... Underwater wireless sensor networks (UWSNs) are newly emerged wireless networks, by providing the most promising mechanism for discovering the underwater environment very ...The data collected by ...
5
Hybrid Cross Layer Fault Resilient Energy Efficient Data Transmission for Underwater Acoustic Sensor Networks
... forwarding data on depth from sink ...For acoustic 3D Under Water Sensor Networks (UWSNs), an Energy Efficient logical Cubical layered Path Planning Algorithm (EECPPA) as well as Multiple Sink EECPPA ...
7
Signal processing and field measurements for underwater acoustic communications
... for underwater communications and presents a passive-phase conjugation (PPC) based multichannel ...for underwater communications, and only one single channel equalizer is required to remove ...
141
A Review on Underwater Acoustic Sensor Networks: Perspective of Internet of Things
... to acoustic communication modules deployed ...of underwater sensor nodes whose acoustic modems can sense water quality, pressure, temperature, presence of any metal, chemical and biological elements, ...
13
Channel Equalization for Single Carrier MIMO Underwater Acoustic Communications
... keying (DPSK) was then chosen to achieve a bandwidth efficiency between noncoherent and fully coherent sys- tems. It was until early 1990s, UWA transmission using the bandwidth-efficient coherent modulation appeared in [3]. ...
17
Experimental Assessment of Different Receiver Structures for Underwater Acoustic Communications over Multipath Channels
... Abstract: Underwater communication channels are often complicated, and in particular multipath propagation may cause intersymbol interference ...real data collected in a high-frequency (10–14 kHz) field ...
18
Underwater Wireless Communication
... of acoustic waves in the underwater environment, existing terrestrial MAC solutions are unsuitable for this ...wireless underwater networks, in fact poses additional challenges due to the limited ...
5
Multimodal Underwater Networks: Recent Advances and a Look Ahead
... for underwater scenarios, it has recently been pro- posed that communication devices may incorporate multiple, non-mutually-interfering transceivers, possibly involving multiple technologies [22–25], into what is ...
8
Challenges for Efficient Communication in Underwater Acoustic Sensor Networks
... oceanographic data collection, pollution monitoring, offshore exploration and tactical surveillance ...Autonomous Underwater Vehicles (UUVs, AUVs), equipped with underwater sensors, will also find ...
6
Need and Role of Underwater Acoustic Sensor Networks
... with acoustic link to a companion Moored Surface Buoy for real time communications and is designed to detect and report tsunamis if the pressure fluctuations are above a preset ...two data reporting ...
9
Review Article: Multicarrier Communication for Underwater Acoustic Channel
... in underwater communications as a superior alternative to single carrier broadband modulation to achieve high data rate transmission ...to underwater channels is the motion induced Doppler ...
16
Cooperative OFDM Underwater Acoustic Communications with Limited Feedback: Part I
... The Underwater acoustic (UWA) communication has been regarded as one of the most challenging wireless communications due to its unique channel properties, such as large Doppler shift, dynamic ...
5
Nonstationary System Analysis Methods for Underwater Acoustic Communications
... The underwater environment can be considered a system with time-varying impulse response, causing time-dependent spectral changes to a transmitted acoustic ...In underwater acoustic ...
14
Energy Efficient and Position Aware Routing for Auv Aided Underwater Acoustic Sensor Network
... node data forwarding to sink ...sensory data packet and control packet is large ...monitoring underwater communications with respect to routing, MAC and Forward Error Correction (FEC) ...The ...
7
A New Method to Improve Performance of Cooperative Underwater Acoustic Wireless Sensor Networks via Frequency Controlled Transmission Based on Length of Data Links
... Since pathloss and noise power are frequency de- pendent, SNR in underwater acoustic communications is related to frequency. Therewith, like all wireless chan- nels, in UWA channels, SNR is a ...
9