Free space optical communications is a line-of-sight (LOS) technology that transmits a modulated beam of visible or infrared light through the atmosphere for broadband communications. In a manner similar to fiber optical communications, free space optics uses a light emitting diode (LED) or laser (light amplification by stimulated emission of radiation) point source for data transmission. However, in free space optics, an energy beam is collimated and transmitted through space rather than being guided through an optical cable. These beams of li ....etc

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1. Define a fiber optic system.
Fiber optic system consists of a fiber optic cable, a light source and a light detector. The
optic fiber is used to carry the light beam from one place to another.
2. What are the uses of optical fibers?
a) To transmit the information of telephone communication, computer data, etc.
which are in the form of coded light signals
b) To transmit the optical images (Example : Endoscopy)
c) To act as a light source at the inaccessible places.
d) To act as sensors to do mechanical, electrical and magnetic measure ....etc

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The Robot control using the wireless communication and the serial communication



Executive Summary
The NASA Robotics Alliance Cadets Program is being designed to be implemented at a
very low start-up cost, and to make this goal obtainable, the program is being developed
using low to no cost components from already developed, well-tested and robust
engineering testbeds.
In this project we are trying to establish both wireless communication between the mobile
Robot and the rem ....etc

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i am intetersted in doing my final year project in wireless data and voice communication which is latest technology of transmitting data ....etc

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communications satellite

communications is an artificial satellite stationed in space for the purpose of telecommunications. Modern communications satellites use a variety of orbits including geostationary orbits, Molniya orbits, otherelliptical orbits and low (polar and non-polar) Earth orbits.For fixed (point-to-point) services, communications satellites provide a microwave radio relay technology complementary to that of submarine communication cables. They are also used for mobile applications such as communications to ships, veh ....etc

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To get full information or details of optical communication based counter please have a look on the pages

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http://seminarsprojects.net/Thread-optical-fiber-communication?pid=27277&mode=threaded

http://seminarsprojects.net/Thread-optical-fiber-communication?pid=67616&mode=threaded

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http://seminarsprojects.net/Thread-optical-fiber-communication-full-report?pid=13756&mode= ....etc

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To get full information or details of hart communication please have a look on the pages

http://seminarsprojects.net/Thread-hart-communication--24302?pid=51231

http://seminarsprojects.net/Thread-hart-communication--24302?pid=51201#pid51201

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if you again feel trouble on hart communication please reply in that page and ask specific fields in hart communication ....etc

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Introduction

-Exchange of data between two or more separate, independent processes/threads.
-Operating systems provide facilities/resources for inter-process communications (IPC), such as message queues, semaphores, and shared memory.
-Distributed computing systems make use of these facilities/resources to provide application programming interface (API) which allows IPC to be programmed at a higher level of abstraction. (e.g., send and receive)
-Distributed computing requires information to be exch ....etc

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pls send me d page link to download sc.gupta optical fibre communication ....etc

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