Abstract
Ocean bottom sensor nodes can be used for oceanographicdata collection, pollution monitoring, offshore explorationand tactical surveillance applications. Moreover, Unmannedor Autonomous Underwater Vehicles (UUVs, AUVs),equipped with sensors, will find application in exploration ofnatural undersea resources and gathering of scientific data incollaborative monitoring missions. Underwater acoustic networkingis the enabling technology for these applications. UnderwaterNetworks consist of a variable number of sensors and vehiclesth ....etc

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sir, i need a technical report on underwater wireless communications.
I have to submit this by Monday and i am not getting in Google... please help me.





m.v. sankarteja ....etc

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in ieee format
topic - overview of networking protocols for underwater wireless communications ....etc

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could you plz.. provide ppt for this seminar topic ....etc

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Presented By:
Reena Kumari
M.Tech (ETC)
Roll No: 851015
3rd semester,2009

Introduction
Goal:
To design a efficient MAC protocol for underwater acoustic sensor network suitable for multi-hop network

Different emphasis from mid-semester surveys:
Challenges and opportunities of Physical channel of underwater communication(already discussed)
Studied different MAC protocol as introduced by different authors→ (already discussed)
Comparison between MAC’s and their challenges (already discussed)

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Wireline Quality Underwater Wireless Communication
Using High Speed Acoustic Modems

Abstract--The paper introduces LinkQuest Inc.'s cutting-edge
high speed underwater acoustic modems. LinkQuest Inc.
combined recent advances in high speed digital communication
with broadband underwater acoustics in the development of the
high speed modems. Advanced Broadband Spread Spectrum
Technology results in dramatically increased data rate and
robustness and decrease in power consumption. The modems are
proven to perform at high dat ....etc

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high speed underwater acoustic modems is shown in this paper. high speed digital communication and broadband underwater acoustics technologies have been combined to achieve this . increased data rate and decreased power consumption is achieved by Broadband Spread Spectrum Technology. The underwater communication has to deal with noises such as offshore drilling noise, ambient noise, ship noise etc. no communication errors has been seen to appear with these noises.
Broadband Spread Spectrum Technology us implemented ....etc

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Underwater wireless communications can enable
many scientific, environmental, commercial,
safety, and military applications. Wireless signal
transmission is also crucial to remotely control
instruments in ocean observatories and to enable
coordination of swarms of autonomous underwater
vehicles and robots, which will play the role
of mobile nodes in future ocean observation networks
by virtue of their flexibility and reconfigurability.
To make underwater applications
viable, efficient communication protocols among
underwater devices, ....etc

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1. INTRODUCTION
As more and more attention is paid to the ocean, the requirement of exploration and exploitation to it grows increasingly. In order to realize some tasks in the ocean such as collection of the information, monitoring of the environment, exploration of energy sources, forecast of natural disaster, assistant navigation, underwater communication technique has become a very important scientific research field. Because acoustic wave is adopted to actualize communication in the water instead of electromagne ....etc

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