Generation of Telecommunication

8/3/2019 Generation of Telecommunication

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What is Telecommunication ?y Telecommunication is the transmission of information over

significant distances to communicate.

y

In earlier times, telecommunications involved the use of visualsignals, such as beacons, smoke signals, semaphore telegraphs,

signal flags, and optical heliographs, or audio messages via

coded drumbeats, lung-blown horns, or sent by loud whistles.

y In the modern age of electricity and electronics,

telecommunications now also includes the use of electrical

devices such as telegraphs, telephones, and teleprinters, the use

of radio and microwave communications, as well as fiber

optics and their associated electronics, plus the use of the

orbiting satellites and the Internet.



Basic Communications System

Elements:

Transmitter

Receiver

Medium



P urpose of a Communication

System:y Deliver as much information as possible from the

source to the destination (capacity). Capacity may be

measured in bits per second (bps) or in call capacity.Information maybe of different natures, such as voice,video, or data produced by a computer.

y Deliver information in shortest time (delay). Delaysare measured in milliseconds or in round trip delay.

y Reduce errors in delivery of information (error detection/correction). Errors can be measured as BitError Rate (BER) or Frame Error Rate (FER).



A BRIEF HISTORY OF

COMMUNIC ATIONS TECHNOLOGY Language probably existed

35,000BC

First carriers pigeons

700 BC

First Book printed in Europe1453 AD

First monthly newspaper (Italy)1562

First magazine (Germany)1594

Alexander Graham Bell discovers theprinciple of the telephone.1874



Radio waves identified1888 Marconi developed a radio; motion

picture camera invented1895 Bell system developed the French phone,

with the transmitter and receiver in asingle handset.

1927

First TV demonstrated; first soundmovie1928

First commercial mobile telephone was put into service.1946

Transistor invented

1947 First satellite launched (RussiasSputnik)1957

Martin Cooper of Motorolainvented Cellular Radio1973



Texas instruments introduced DSP1983

Cellular phone; Nintendo1985

First CDMA phones shipped1995 Internet telephone-to-telephone

service1997 Video stores shift from tapes to videoCDs and DVDs1998

Full motion Video telephone; interactive TV set-top boxes for games and linking to other viewers and shopping services

1999

2.5G wireless services2001 Australia and Taiwan launched 3G

services.2006



Wireless Communications

y W ith the invention of the radio, expensive cabling

requirements were eliminated and transoceanic wireless communication became possible.

y In radio communication the information signal isconverted into an electromagnetic wave form and is

broadcast in space using radiating devices known asantennas.



Brief History of Wireless

Communications: The Birth of Radio1897-1898

Transoceanic Communication1901-1909 Voice over Radio1914-1940s

Birth of Mobile Telephony 1946-1976 Cellular Mobile Telephony 1979-1994

PCS and Beyond1995-2000



EV ALU ATION OF MOBILE

COMMUNIC ATION FROM 1G T0 4G

1st Generation

A dvanced Mobile Phone Service( A MPS)

Total A ccess Communications System(T A CS)



1Gmobile

phone



2nd Generation

Global System for Mobile Communication(GSM)

Personal Digital Cellular (PDC)



2Gmobile

phones



2.5 Generation

General Packet Radio Service (GPRS)

Personal Digital Cellular Packet-Packet(PDC P)

Code Division Multiple A ccess(CDM A One)



2.5G

mobile

phones



3rd Generation

3GPP -ThirdGenerationPartnershipProject

3GPP2 -ThirdGenerationPartnershipProject2

High-Speed Circuit-Switched Data(HSCSD)

EnhancedDataratesforG

lobal Evolution(EDG

E)Universal Mobile Telecommunications System(UMTS)

Global PositioningSystem(GPS)





4rd Generation

Mobile WiM AX

3GPP Long Term Evolution (LTE)

Ultra Mobile Broadband

Flash-OFDM



4

Gmobile

phones



W ith the development of technology, the wireless communication developed very rapidly from 1G to 4G. Still people doresearches regarding the mobile

communication to provide a sophisticated &reliable efficient communication for the endusers.

CONCLUSION

Generation of Telecommunication

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