Telecommunication Essay

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  • Topic: Mobile phone, GSM, GSM services
  • Pages : 40 (11637 words )
  • Download(s) : 169
  • Published : March 25, 2011
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TABLE OF CONTENTS

1. INTRODUCTION
* TELECOMMUNICATION
* HISTORY OF GSM
* Subscriber Identity Module (SIM)
* Changes with the changing Technology
* DoT and the Precursor Reform
* ABOUT TELECOM IN INDIA
* Milestones in Telecom Reforms
* BASIC STRUCTURE OF INDIAN TELECOM MARKET
* Evolution of Indian telecom market
* The Indian market-Basic Demand Trends
* Growth of Telecom Network
* Network Expansion
* Cellular service providers
* Market structure of telecom India
* TELECOM IN DELHI
2. COMPANY PROFILE
* AIRCEL
* Maxis in Indonesia
* MISSION STATEMENT
* OUR GOALS AND VALUES
* AIRCEL IN DELHI
* VALUE ADDED SERVICES ( VAS )
3. RESEACH METHODOLOGY
* INTROCUCTION
* PROBLEM DEFINATION
* RESEARCH DESIGN
* DATA ANALYSIS
4. METHODOLOGY DATA Analysis
* SURVEY ON AIRCEL USABLITY
* SURVEY ON DIALLER TUNES SERVICE
* FINDINGS
* LIMITATIONS
* RECOMMENDATIONS AND SUGESSTIONS
5. ANNEXURES
* QUESTIONNARE
* CODESHEET
* BIBLIOGRAPHY

Introduction

TELECOMMUNICATION
The word telecommunication was adapted from the French word telecommunication. It is a compound of the Greek prefix tele-, meaning 'far off', and the Latin communicates, meaning 'to share'. Telecommunication is the transmission of signals over a distance for the purpose of communication. In modern times, this process almost always involves the sending of electromagnetic waves by electronic transmitters but in earlier years it may have involved the use of smoke signals, drums or semaphore. Today, telecommunication is widespread and devices that assist the process, such as the television, radio and telephone, are common in many parts of the world. There is also a vast array of networks that connect these devices, including computer networks, public telephone networks, radio networks and television networks. Computer communication across the Internet, such as e-mail and instant messaging, is just one of many examples of telecommunication. The basic elements of a telecommunication system are:

* a transmitter that takes information and converts it to a signal for transmission * a transmission medium over which the signal is transmitted * a receiver that receives and converts the signal back into usable information Often telecommunication systems are two-way and devices act as both a transmitter and receiver or transceiver. For example, a mobile phone is a transceiver. Telecommunication over a phone line is called point-to-point communication because it is between one transmitter and one receiver, telecommunication through radio broadcasts is called broadcast communication because it is between one powerful transmitter and numerous receivers. A collection of transmitters, receivers or transceivers that communicate with each other is known as a network. Digital networks may consist of one or more routers that route data to the correct user. An analogue network may consist of one or more switches that establish a connection between two or more users. For both types of network, a repeater may be necessary to amplify or recreate the signal when it is being transmitted over long distances. This is to combat attenuation that can render the signal indistinguishable from noise. The shaping of a signal to convey information is known as modulation. Modulation is a key concept in telecommunications and is frequently used to impose the information of one signal on another. Modulation is used to represent a digital message as an analogue waveform. This is known as keying and several keying techniques exist — these include phase-shift keying, frequency-shift keying, amplitude-shift keying and minimum-shift keying. Bluetooth, for example, uses phase-shift keying for exchanges between devices.

HISTORY OF...
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