transparent dielectrics. • Its function is to guide visible and infrared light over long distances. Structure of optical fiber • Core – central tube of very thin size made up of optically transparent dielectric medium and carries the light form transmitter to receiver. The core diameter can vary from about 5um to 100 um. • Cladding – outer optical material surrounding the core having reflecting index lower than core. It helps to keep the light within the core throughout the phenomena of total internal reflection
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Rajalakshmi Engineering College‚ Thandalam Prepared by Ms. S.Sheena Christabel‚ Lecturer/ECE EC2311-COMMUNICATION ENGINEERING III YEAR EEE A Introduction to Communication Engineering Communication Engineering Course Work introduces different methods of analog communication and their significance. Digital Communication methods for high bit rate transmission are explained. It involves the concepts of source and line coding techniques for enhancing rating of transmission of minimizing the errors
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Concept Questions p. 24 1. List and describe three ways to access the CLI. Attach a rollover cable to the PC’s COM port and then to either the Auxiliary or Console port on the router. Connect to the Console port because messages from the router are logged on this line. The Auxiliary port is used for remote access and can also be used if the Console port is damaged or not responding. The third way to access the CLI is through Telnet. 2. Explain the difference between user EXEC and privileged
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omnidirectional radio range (VOR)‚ is a type of short-range radio navigation system for aircraft‚ enabling aircraft to determine their position and stay on course by receiving radio signals transmitted by a network of fixed ground radio beacons with a receiver unit. It uses radio frequencies in the very high frequency (VHF) band from 108 to 117.95 MHz. Developed in the US beginning in 1937 and deployed by 1946‚ VOR is the standard air navigational system in the world‚ used by both commercial and general
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Amplitude modulation or AM as it is often called‚ is a form of modulation used for radio transmissions for broadcasting and two way radio communication applications. Although one of the earliest used forms of modulation it is still in widespread use today. The first amplitude modulated signal was transmitted in 1901 by a Canadian engineer named Reginald Fessenden. He took a continuous spark transmission and placed a carbon microphone in the antenna lead. The sound waves impacting on the microphone
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programming and the serial ports of the PCs. The ports are programmed in C. We use MAX 232 to convert RS 232 logic to TTL logic and then an optical transmitter circuit to transmit data via fiber optic cable. The optical transmitter circuit has a LED which is matched as far the cable and MAX 232 is concerned. At the receiver we have an optical receiver circuit which receives data using a photo transistor and a MAX 232 again to convert TTL logic to RS 232 for the serial port at the receiving end computer
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and a wide angle of irradiance. Another lighting device used in optical up-link is composed of several white LEDs. It has a White LEDs is identified by simulation. Keywords: Visible-light communication; White LED; Lighs PD Ceiling Transmitter PD layout 1 Up Link Introduction Down Link Up Link Terminal Terminal White LED is characteristic of low power consumption‚ long life
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and reactions which together result in the sharing of meaning. COMMUNICATION PROCESS Sender Encoding Channel Receiver Decoding Feedback (Message) Elements of Communication Process Sender – It is the person who intends to make contact with the objective of passing the message to other persons. Message – This is the subject matter of the communication‚ which is intended to be passed to the receiver from the sender. Encoding – The process of converting the message into communication symbols. Channel
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whose radio contains an active transmitter and a receiver with full-quadrature (IQ) demodulation. In this paper‚ we demonstrate
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ACKNOWLEDGMENT ACKNOWLEDGMENT Firstly the success of the project was by the grace of the Almighty. This Report would not have been possible without the essential and gracious support of many individuals. Firstly we thank our parents‚ for their unconditional love and support throughout and having faith in us. We thank Emirates Aviation college instructors and faculty members. The leadership of Mr. Omar Chafic‚ project supervisor and instructor‚ guided us throughout the process of the project
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