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7/25/2019 Broad Band Wireless Access-WiFi & WiMAX
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Broadband Wireless Access:
Wi-Fi & WiMAX
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The Wireless Landscape
WMN
Mbps1 10 1000,1
Outsid
e
Campu
s
Fixed
Walk
Vehicle
Within
Campus
Fixed/
Desktp
Walk
Mobility
UMTS/E
V-DO
80
2.11
a/g
80
2.11
b
80
2.11
Bluetooth
SM!"S
#
WiM$%
802.11&
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!
Wi(i
"What is Wi(i )
# *&te+ ope+ability sta&,a+, o+ Wi+eless (i,elity usi&g*EEE 802.11b/802.11a/802.11g sta&,a+,s.
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$
" o *EEE802.11b/802.11g i&te+o+ ith i+e, $N*EEE802.#Usi&g $33ess !oi&t 4$!5 hi3h o+s as a b+i,ge betee&
these to &eto+s
Wi(i
" Wi-(i $llia&3e .i-i.o+g
# No& p+oit i&te+&atio&al asso3iatio& 3e+tiyi&g i&te+ope+abilityo i+eless lo3al a+ea &eto+ p+o,u3ts base, o& *EEEspe3ii3atio&.
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%
"WL&' is takin( )er
# *me, O++ice and Cit-
# .)erthin( shippin( ith
WL&', laptps, D&s, hmeappliances
# tandards dri)en
# 02311 standards cmmunitis as 4i( as cellular
standards
" art + n(in( trend tprta4le cmputin(# Cnsumer dri)en
Centrin e++ect
#Cnsistent user experiencet L&'
# 5nlicensed, simple,cmpetiti)e market place
# 6nexpensi)e
Why W$N )
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Conventional cellular systems
concentrate on big RF
deployment.
Radios blast over and through
the environment.
Signals from central station must
penetrate the cluttered
environment to reach the end
user.
Coverage is determined mainly by
the random shadowing andpenetration loss, not the distance.
Reuires high elevation and high
RF power to overcome losses
Wireless Cellular NetworkPrinciples
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!ireless mesh networ" routes
around the bloc"ages
#ses smart software
$ine%of%sight path loss
&o shadowing
$ow power as the losses are
lower
'igher transmission rates
'igher throughput
Coverage is concentrated
where the users are and not
wasted penetrating obstacles.
Wireless Mesh NetworkPrinciples
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"802.11 - *EEE 3o66ittee o+i+eless la& solutio&s7 also 3a&+ee+ to the i+st sta&,a+,ise,W$N
"802.11b -The 6ost
3o66o&ly &eto+ se+i3e7116bs uses 4DSSS5use the 2.# 9
"802.11a - O(DM7 :# Mbs7uses : 9 ba&,7 less
i&te+e+e&3e
"802.11g -O(DM7 :# Mbs7uses 2.# a&, is ba3a+,s3o6patible ith 802.11b
" Wi-(i ; Wi+eless Ethe+&etp+o6otio& asso3iatio&/i&te+ope+abilitytesti&g
" " = ; Me,iate+6
" 802.11&; 100Mbit?" WiM$% ; 802.1@ =Wi+eless
*&te+ope+ability o+ Mi3+oae $33ess
tandards and Terms
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A28M9A00M9
9adi Fre:uenc pectrum
:.1: :.2: :.: :.2: :.82:2.#8:92.#0009
A00 M9 2.#9
:. 9
802.117 11b7 11g7 Bluetooth
*SM
" 6ndustrial cienti+ic and ;edical
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WiM$%
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Wi-M$%
" Wi>;&? 6ntr3
" 'etrk &rchitecture3
" 9F pectrum and C)era(e3
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1@
What is ?What is ?
" Wi;&? r Worldwide Interoperability for Microwave AccessA had its ri(insin 4ackhaul cnnecti)it usin( micra)e access such as L;D/;;D
" Wi;&? has 4ecme a Bht tpicA in the ireless industr, ith )isi4le anda((ressi)e 4ackin( +rm 6'T.L, amn( thers
" Wi;&? is desi(ned t pr)ide Blast>mileA r B4ackhaulA cnnecti)it usin(ireless
# BLast>mileA re+ers t a ireless cnnectin +rm a mar trunk line t a 4usinessr residential user
# 5sin( 6... 0231% rad4and Wireless &ccess
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1!
http://www.wimaxforum.org/7/25/2019 Broad Band Wireless Access-WiFi & WiMAX
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1$
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1%
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Sta&,a+, base, te3h&ology
" ;ultiple )endrsLer in)estment risk +r peratrs
" ets the +undatin +r cmpetiti)e, cst e+ecti)eslutinI# tandard chip sets
# Le)era(e ecnm + scale in prductin t dri)e dn the cst
# 6nte(ratin ith laptps and D&s Her cst C.
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# 6ndr sel+ installed C. # 6nterpera4ilit and multiple )endr upprt
# L cst thru(h mass prductin
Out,oo+
Sel *&stall
!<
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WiM$%
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2@
WiM$% !+o,u3t (eatu+es
ased n 6... 0231%e>200$ tandard3
&ll 6 'etrk3
OFD;/OFD;&3 ;6;O> at C. and 3
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2!
Syste6$+3hite3tu+e
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2$
SME
*OS
Wi+eless B+oa,ba&, $ppli3atio&
ENTE"!"*SE
*NTE"NET B$;ax
C.
Wi>;ax
ase tatin
Wi>;ax
C.
Wi>;ax
C.
Wi>Fi
*OTOT
Wi>;ax
C.Wi>Fi
&ccess
int
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2%
$DS s Wi-M$%
"&t present &DL is cheaper 4ecause + hi(h C. cst +Wi>;ax e:pt3
" Wi>;ax is )er scala4le ithut much cst t the ser)ice
pr)ider" eak data rates in Wi>;ax is much hi(her
" etter KO +eatures in Wi>;ax
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WiM$%
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THANKTHANKS !!