Global satellite system communication



INTRODUCTION

To make a satellite phone call today from a location that does not offer terrestrial wireline or wireless coverage requires the use of a large, costly terminal, and entails very high per minute charges. Further, the quality of service is relatively poor because of annoying echoes, large transmission delays, overtalk associated with satellite communications using geostationary satellites. The next generati ....etc

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GLOBAL SYSTEM
FOR
MOBILE COMMUNICATION

Definition:
Global system for mobile communication (GSM) is a globally accepted
standard for digital cellular communication. GSM is the name of a
standardization group established in 1982 to create a common European
mobile telephone standard that would formulate specifications for a
pan-European mobile cellular radio system operating at 900 MHz. It is
estimated that many countries outside of Europe will join the GSM
partnership.
1. Introduction: The ....etc

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Global system for mobile communication (GSM) is a globally accepted standard for digital cellular communication. GSM is the name of a standardization group established in 1982 to create a common European mobile telephone standard that would formulate specifications for a pan-European mobile cellular radio system operating at 900 MHz. It is estimated that many countries outside of Europe will join the GSM partnership.Throughout the evolution of cellular telecommunications, various systems have been developed without the benefit of standardized s ....etc

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Global System For Mobile(GSM)

Global system for mobile(GSM) is a second generation cellular system standard that was developed to solve the fragmentation problems of the first cellular systems in Europe's is the world's first cellular system to specify the digital modulation and network level architecture and services. Before GSM, European countries used different cellular standards throughout the continent, and it was not possible for customer to use a single subscriber unit throughout Europe. GSM ....etc

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Global Issues: Ozone Depletion, Global Warming and Acid Rain

Introduction

Air pollution is exerting increasing impact on the environment. Humans have been altering the chemistry of the atmosphere on a global scale. These changes may:
Modify the global climate
Threaten the health of human beings
Create many environmental problems such as
Acid rain
Depletion of ozone layer
Global warming
Seriously upset the global ecosystem

What is ozone depletion?

Ozone is a highly reactive gas comprising ....etc

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Have u ever been lost and wished there was an easy way to find out which way u needed to go? How about finding yourself out hiking and then not knowing how to get back to your camp or car? Ever been flying and wanted to know the nearest airport?

Our ancestors had to go to pretty extreme measures to keep from getting lost. They erected monumental landmarks, laboriously drafted detailed maps and learned to read the stars in the night sky.

GPS is a satellite based radio navigation system which provides continuous, all weather, worldwide nav ....etc

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GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS
&
SECURITY

SUBMITTEDBY :
SARATH CHOWDARY P.
SURYA TEJA P.
THIRDYEAR,
ELECTRONICS & COMMUNICATION
ENGINEERING ,
SIRC.R.REDDYCOLLEGEOFENGINEERING,
ELURU, ANDHRA PRADESH.


Abstract
In the past decade mobile communications has become one of the driving forces of the digital revolution. Everyday, millions of people are making phone calls by pressing a few buttons. Little is known about how one personâ„¢s voice r ....etc

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4G MOBILE COMMUNICATION SYSTEM


A SEMINAR REPORT
Submitted by
SUBRAT SUMAN
COMPUTER SCIENCE & ENGINEERING
SCHOOL OF ENGINEERING
COCHIN UNIVERSITY OF SCIENCE AND TECHNOLOGY,
ABSTRACT
4G (also known as Beyond 3G), an abbreviation for Fourth-Generation, is a term used to describe the next complete evolution in wirelesscommunications. A 4G system will be able to provide a comprehensive IP solution where voice, data and streamed multimedia ....etc

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Global system for mobile communication (GSM) is a globally accepted standard for digital cellular communication. GSM is the name of a standardization group established in 1982 to create a common European mobile telephone standard that would formulate specifications for a pan-European mobile cellular radio system operating at 900 MHz. It is estimated that many countries outside of Europe will join the GSM partnership.
Throughout the evolution of cellular telecommunications, various systems have been developed without the benefit of standardized ....etc

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UMTS A GLOBAL MOBILE SYSTEM

TOPICS OF DISCUSSION

WHAT IS UMTS
BRIEF HISTORY OF UMTS
TYPES OF UMTS SYSTEM
SPECIAL FEATURES OF UMTS
TECHNOLOGY BEHIND UMTS
NETWORK STRUCTURE OF UMTS
SPECTRUM OF UMTS
ADVANTAGE OVER GSM AND CDMA
APPLICATION OF UMTS
UPGRADATION OF UMTS
FUTURE ASPECTS OF UMTS



WHAT IS UMTS

UMTS is Universal Mobile Telecommunication System.
It is one of the THIRD GENERATION(3G) mobile phone technology
• It is standardized by 3GPP, and is the European answer to the ....etc

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