underwater optical communication
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underwater optical communication




High bandwidth underwater optical communication
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ABSTRACT Wereporterror-free underwater optical transmission measurements at 1 Gbit/s (10 9 bits/s) over a 2 m path in a laboratory water pipe with up to 36 dB of extinction. The source at 532 nm was derived from a 1064 nm continuous-wave laser diode that was intensity 

Visible spectrum optical communication and distance sensing for underwater applications
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ABSTRACT To establish an underwater communication system for a swarm of submersibles, we developed an optical communication transceiver, small in size, combining the IrDA physical layer with 3 Watt high power light emitting diodes, emitting light in the green and blue part 

Short range underwater optical communication links
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ABSTRACT The future tactical ocean environment will be increasingly complicated. In addition to traditional communication links there will be a proliferation of unmanned vehicles in space, in the air, on the surface, and underwater. To effectively utilize these systems 

An underwater optical communication system implementing Reed-Solomon channel coding
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ABSTRACT An underwater optical communications system that implements forward error correction is demonstrated. The system uses a 405 nm diode laser to transmit on-off-keying (OOK) return-to-zero modulated data at a rate of 500 kbps to a photodiode receiver using 

Non-line-of-sight underwater optical wireless communication network
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The growing need for ocean observation systems has stimulated considerable interest within the research community in advancing the enabling technologies of underwater wireless communication and underwater sensor networks. Sensors and ad hoc sensor 

Building an Underwater Wireless Sensor Network Based on Optical: Communication: Research Challenges and Current Results
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ABSTRACT In this paper current research for an Underwater Wireless Sensor Network based on optical communication between nodes is described. Radio frequencies are strongly attenuated in water and optical communication can be considered as a feasible solution to 

Underwater optical wireless communication network
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ABSTRACT The growing need for underwater observation and subsea monitoring systems has stimulated considerable interest in advancing the enabling technologies of underwater wireless communication and underwater sensor networks. This communication 

Design and implementation of HDL modules and circuits for underwater optical wirelesscommunication
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ABSTRACT Underwater wireless optical communication has been used for establish a link between mobile vehicles and/or fixed nodes because light, especially in the blue/green region, allows to achieve higher data-rate than acoustical or electromagnetic waves for 

Designing a wireless underwater optical communication system
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Though acoustic modems have long been the default wireless communication method for underwater applications due to their long range, the need for high speed communication has prompted the exploration of non-acoustic methods that have previously been 

VHDL modules and circuits for underwater optical wireless communication systems
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ABSTRACT Underwater wireless optical communication has been used for establish a link between mobile vehicles and/or fixed nodes because light, especially in the blue/green region, allows to achieve higher data-rate than acoustical or electromagnetic waves for 

DemoABSTRACT Low cost, medium range optical, communication for underwater test beds
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To develop novel underwater sensor network technologies, experimental validation is crucial. Unfortunately, full scale deployment is often hard and costly. Therefore, aquatic testbeds that are scaled down versions of the final system and that can be deployed in 

Using optical communication for remote underwater robot operation
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Underwater vehicles are typically operated using a tether or a slow acoustic link. We present an underwater optical communication system that enables a high-throughput and low- latency link to an underwater robot. The optical link allows the robot to operate in cluttered 

Study on computing the receiving optical power in underwater optical wireless communication
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In underwater optical wireless communication(OWC), the impacts of water scattering on divergence angle and distribution of optical power are usually out of consideration in previous studies of receiving optical power. A three-dimensional distributing model for 

Time domain dispersion of underwater optical wireless communication
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A new method to count the expected value and variance of time dispersion is presented for time dispersion of underwater optical wireless communication. Instead of the typically used Gamma distribution, inverse-Gaussian distribution is suggested for underwater optical 

Underwater Optical Communication Receivers
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ABSTRACT When an optical receiver is to operate underwater and detect a signal from a point optical source located at altitude above the water, unusual design constraints are imposed by the underwater environment. The effect of the propagation medium on a deeply 

Analysis of Optical Wireless Communication for Underwater Wireless Communication
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ABSTRACT Recently, the importance of underwater wireless optical communication has been grown for applications of underwater observation and sea monitoring systems. This communication technology is expected to play a prominent role in investigating climate 

Optical receivers for underwater communication
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AA(McDonnell-Douglas Astronautics Co., Saint Louis, MO.), AB(McDonnell-Douglas Astronautics Co., Saint Louis, MO.), AC(McDonnell-Douglas Astronautics Co., Saint Louis, MO.)  The tradeoffs which must be considered to develop an optimum overall receiver design are discussed. 

Designing a wireless underwater optical communication system
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Though acoustic modems have long been the default wireless communication method for underwater applications due to their long range, the need for high speed communication has prompted the exploration of non-acoustic methods that have previously been 

An End-to-End Signal Strength Model for Underwater Optical Communication
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ABSTRACT In this paper we present a generic model of signal strength in underwater optical communication. The model includes light sources, detectors, amplifier and detector circuitry, optics as well as a simple extinction model of the water channel. The end-to-end model 

An Underwater Optical Wireless Communication System Based on LED Source
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ABSTRACT Compared with other communication methods, optical wireless communication (OWC) holds the merits of higher transmitting rate and sufficient secrecy. So it is an efficacious communicating measure for data transmitting between underwater carriers. 

A photon-counting optical communication system for underwater data transfer
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ABSTRACT We report on the performance of a photon-counting optical communication system which was used to transmit optical data at clock rates (not detection rates) of 40Mb/s at a wavelength of 450nm. The transmitted test data patterns comprised of one page of ASCII 

Analysis of Underwater Environment and Establishment of Underwater Wireless Optical Communication Link
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ABSTRACT A major challenge facing ocean exploration and surveillance is how to quickly and accurately communicate the data obtained by the sensors or unmanned system to a surface ship or shore-based station. The primary reason for this challenge is that radio frequency 

An underwater optical wireless communication system based on LED source
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ABSTRACT Compared with other communication methods, optical wireless communication (OWC) holds the merits of higher transmitting rate and sufficient secrecy. So it is an efficacious communicating measure for data transmitting between underwater carriers. 

Underwater Optical Communication Using a Modulating Retroreflector
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underwater optical communication can be a good method for underwater communication at short ranges when the application requires high data rates, low latency or covert operation. At one megabit per second, the system was able to transmit data error-free at up to 5. 5 

Monte-Carlo-Based Channel Characterization for Underwater Optical Communication Systems
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We consider channel characterization for underwater wireless optical communication (UWOC) systems. We focus on the channel impulse response and, in particular, quantify the channel time dispersion for different water types, link distances, and transmitter/receiver 

A Low Power, Low Cost, Underwater Optical Communication System
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B Bay ,Ridge 2000 Events ,scamit.googlecode.com Maurice Tivey1 (WHOI, Geology and Geophysics), Paul Fucile (WHOI, Physical Oceanography), and Enid Sichel (WHOI and Massachusetts Maritime Academy, Buzzards

Adaptive modulation schemes for underwater wireless optical communication systems
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ABSTRACT Optical communication has been widely used in underwater systems. However, different modulation schemes may result in different performances [1-5] for specific link conditions and requirements. For instance, the change of probabilities for source bits 0 

Investigation of suitable modulation techniques for underwater wireless optical communication
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ABSTRACT For an underwater wireless optical communication system, we consider the use of different intensity modulation techniques, and compare their performance by taking realistic system parameters into account. In particular, we contrast the performances of on-off 

Optoacoustic aiming device for an underwater wireless optical communication system
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This paper proposes a compact, narrowly directed optoacoustic schlieren-type detector– direction finder, developed to solve the problem of preliminary aiming of an optical detector and an optical transmitter in a wireless optical underwater communication system.

An analytical model of the power spatial distribution for underwater optical wirelesscommunication
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Employing optical propagation theory in Hankel transform, an analytical model of the optical power spatial distribution is derived for the ideal point optical source and the Gaussian laser, respectively. Experimental measurements of the spatial distribution of a Gaussian laser 

Optical Communication in Underwater Applications(Optisk Kommunikation i Undervattenstillaempningar)
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An important capability of a future submarine system is the ability to communicate rapidly utilizing high data transfer rates. The communication should be secure enough to prevent the revealing of the position of the submarine. Unmanned underwater vehicles (UUV's) 

Acoustic and Optical Communication for Underwater Wireless Sensor Networks
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The underwater medium presents many challenges for digital communication for all modalities that have been attempted underwater; namely, acoustics, optics, and electromagnetics. There is limited available bandwidth using acoustics in addition to high 

Autonomous, Localization-Free Underwater Data Muffling using Acoustic and Optical Communication
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ABSTRACT We present a fully autonomous data muling system consisting of hardware and algorithms. The system allows a robot to autonomously find a sensor node and use high bandwidth, short range optical communication to download 1.2 MB of data from the sensor 

Optical Communication System for an Underwater Wireless Sensor Network
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ABSTRACT Seventy percent of the Earth is covered with water. Yet, we know so little about what lies below the sea surface. One new emerging technology that can help in oceans exploration is underwater wireless sensor network (UWSN). In such a network, a number 

Routing for Delay Tolerant NetworksLow-Power Based Coherent Acoustic Modem for High-Speed Communication in Underwater Sensor NetworksQSLS: Efficient
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CH PARK, KS HONG ,search.ieice.org  pp.3736-3743 PAPER-Fiber-Optic Transmission for Communications Frequency-Domain Equalization for Coherent Optical Single-Carrier  3934 LETTER-Network Low-Power Based Coherent Acoustic Modem for High-Speed Communication in Underwater Sensor Networks 

Prospects and Problems of Optical Diffuse Wireless Communication for UnderwaterWireless Sensor Networks (UWSNs)
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The aim of this paper is to highlight the prospects and problems of optical wireless communication for applications in the field of Underwater Wireless Sensor Networks (UWSNs). The necessity of wireless underwater connections, especially in UWSN, has 


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