wireless communication past present and future
Post on 05-Mar-2016
218 Views
Preview:
DESCRIPTION
TRANSCRIPT
7/21/2019 Wireless Communication Past Present and Future
http://slidepdf.com/reader/full/wireless-communication-past-present-and-future-56d9fdb95087a 1/12
WirelessWireless
Communication:Communication:
Past, Present, andPast, Present, and
FutureFuture
Ericko YuliantoEricko YuliantoEngineering 302Engineering 302
May 7, 2002May 7, 2002
7/21/2019 Wireless Communication Past Present and Future
http://slidepdf.com/reader/full/wireless-communication-past-present-and-future-56d9fdb95087a 2/12
Before the “Birth ofBefore the “Birth of
Radio”Radio”
James Clerk MaxwellJames Clerk Maxwell– A brilliant matematicianA brilliant matematician
– Maxwell’s Differential EquationMaxwell’s Differential Equation
– !eories o" relati#ity!eories o" relati#ity
$einric %u&ol" $ert'$einric %u&ol" $ert'– A (ro"essor o" (ysicsA (ro"essor o" (ysics
– Ex(eriments &ealing wit electric wa#esEx(eriments &ealing wit electric wa#es– )irst to broa&cast an& recei#e ra&io)irst to broa&cast an& recei#e ra&io
wa#eswa#es
7/21/2019 Wireless Communication Past Present and Future
http://slidepdf.com/reader/full/wireless-communication-past-present-and-future-56d9fdb95087a 3/12
ContinuedContinued
E&ouar& *ranlyE&ouar& *ranly– CohererCoherer wireless &etectorwireless &etector
+li#er Jose( o&ge+li#er Jose( o&ge– -esigne& a stan&ar& &etector in early wireless-esigne& a stan&ar& &etector in early wireless
telegra( recei#erstelegra( recei#ers
Alexan&er .o(o#Alexan&er .o(o#– %a&io in#entor /1%a&io in#entor /1
7/21/2019 Wireless Communication Past Present and Future
http://slidepdf.com/reader/full/wireless-communication-past-present-and-future-56d9fdb95087a 4/12
The “Birth of Radio”The “Birth of Radio”
uglielmo Marconiuglielmo Marconi
– E&ucate& in Englan& an& talyE&ucate& in Englan& an& taly
– $ert'4s &eat "ire& Marconi wit i&ea$ert'4s &eat "ire& Marconi wit i&ea
– Ex(erimente& in transmitting &etectableEx(erimente& in transmitting &etectable
Morse signal o#er a certain range5Morse signal o#er a certain range5
– rante& a *ritis (atent in Marc 687rante& a *ritis (atent in Marc 687
– !e 9ireless !elegra( an& :ignal!e 9ireless !elegra( an& :ignalCom(anyCom(any
7/21/2019 Wireless Communication Past Present and Future
http://slidepdf.com/reader/full/wireless-communication-past-present-and-future-56d9fdb95087a 5/12
TransoceanicTransoceanic
CommunicationCommunication
!o break te isolation o" te sea!o break te isolation o" te sea
)irst (erson to bri&ge te Atlantic by)irst (erson to bri&ge te Atlantic by
wirelesswireless;se& in commercial an& &e"ense;se& in commercial an& &e"ense
si(ssi(s
Titanic Titanic inci&ent – sa#e& some 6,<00inci&ent – sa#e& some 6,<00(eo(le(eo(le
n#ol#e& ea#ily in 9orl& 9ar n#ol#e& ea#ily in 9orl& 9ar
7/21/2019 Wireless Communication Past Present and Future
http://slidepdf.com/reader/full/wireless-communication-past-present-and-future-56d9fdb95087a 6/12
The Growth of RadioThe Growth of Radio
StationStation
)irst broa&caster= >->A in .ittsburg)irst broa&caster= >->A in .ittsburg
/?o#ember 2, 68201/?o#ember 2, 68201
n less tan @ monts, o#er 2<0 newn less tan @ monts, o#er 2<0 newstation licenses are grante&5station licenses are grante&5
!e ;5: go#ernment restricts!e ;5: go#ernment restricts
broa&casting to s(eci"ic wa#elengt5broa&casting to s(eci"ic wa#elengt5
A&#ertising on ra&io= AmericanA&#ertising on ra&io= American
!ele(one an& !elegra( Com(any!ele(one an& !elegra( Com(any
7/21/2019 Wireless Communication Past Present and Future
http://slidepdf.com/reader/full/wireless-communication-past-present-and-future-56d9fdb95087a 7/12
ContinuedContinued
E&war& $owar& Armstrong=E&war& $owar& Armstrong=
)reuency Mo&ulation /)M1 in 683<)reuency Mo&ulation /)M1 in 683<
)irst use& "or (ublic sa"ety use&5)irst use& "or (ublic sa"ety use&5
n#ol#e& in 9orl& 9ar n#ol#e& in 9orl& 9ar
– Motorola4s $an&ieB!alkie an& 9alkieBMotorola4s $an&ieB!alkie an& 9alkieB
!alkie!alkie
.ostBwar ri#al= tele#ision.ostBwar ri#al= tele#ision
7/21/2019 Wireless Communication Past Present and Future
http://slidepdf.com/reader/full/wireless-communication-past-present-and-future-56d9fdb95087a 8/12
Telephone-Radio EraTelephone-Radio Era
ars Magnus Ericssonars Magnus Ericsson
– .artnere& wit Carl An&ersson.artnere& wit Carl An&ersson 5M5M
Ericsson an& Co5Ericsson an& Co5
66= )irst Ericsson tele(ones were66= )irst Ericsson tele(ones were
use&use&
6860= CarBtele(one6860= CarBtele(one
Early 6820s= Mobile ra&io tele(oneEarly 6820s= Mobile ra&io tele(one
systems "or (olice car &is(atc5systems "or (olice car &is(atc5
7/21/2019 Wireless Communication Past Present and Future
http://slidepdf.com/reader/full/wireless-communication-past-present-and-future-56d9fdb95087a 9/12
ContinuedContinued
682= al#in Manu"acturing Co5682= al#in Manu"acturing Co5 MotorolaMotorola
683= )e&eral Communications683= )e&eral Communications
CommissionCommission
68@= A!D! an& :outwestern *ell68@= A!D! an& :outwestern *ell
intro&uce& te "irst Americanintro&uce& te "irst American
commercial mobile ra&ioBtele(onecommercial mobile ra&ioBtele(one
– :ix cannels in 6<0 M':ix cannels in 6<0 M'
7/21/2019 Wireless Communication Past Present and Future
http://slidepdf.com/reader/full/wireless-communication-past-present-and-future-56d9fdb95087a 10/12
ContinuedContinued
Cellular (oneCellular (one
– -5$ %ing an& 95%5 Young "rom *ell-5$ %ing an& 95%5 Young "rom *ell
aboratories /6871aboratories /6871
– A network o" small geogra(ical areasA network o" small geogra(ical areas
/calle& cells1/calle& cells1
– Ja(anese ri#al= MotorolaJa(anese ri#al= Motorola
– 6876 ntel intro&uce& te "irst6876 ntel intro&uce& te "irstmicro(rocessormicro(rocessor
7/21/2019 Wireless Communication Past Present and Future
http://slidepdf.com/reader/full/wireless-communication-past-present-and-future-56d9fdb95087a 11/12
ContinuedContinued
Euro(e= rou(e :(eciale MobileEuro(e= rou(e :(eciale Mobile
/:M1/:M1
– *egan in 682 by a grou( o" 2@*egan in 682 by a grou( o" 2@
Euro(ean national (one com(aniesEuro(ean national (one com(anies
– n many res(ects was better &esigne&n many res(ects was better &esigne&
– ?ort American counter(art= .C: 6800?ort American counter(art= .C: 6800
7/21/2019 Wireless Communication Past Present and Future
http://slidepdf.com/reader/full/wireless-communication-past-present-and-future-56d9fdb95087a 12/12
FutureFuture
-igital tecnology-igital tecnology– ) .rocessing) .rocessing
– $ig :(ee& -:. .rocessors$ig :(ee& -:. .rocessors
– %econ"igurable Arcitecture%econ"igurable Arcitecture
MicrocellMicrocell– +ne to two or&ers o" magnitu&e smaller+ne to two or&ers o" magnitu&e smaller
tan te current cellular systemtan te current cellular systemCost will signi"icantly &ecreaseCost will signi"icantly &ecrease
Easy an& "lexible im(lementationEasy an& "lexible im(lementation
top related