lmds & mmds

8/9/2019 LMDS & MMDS

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LMDS & MMDSLMDS & MMDS

Dr. Shahzada Alamgir KhanDr. Shahzada Alamgir Khan


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Last Mile WirelessLast Mile Wireless

ConnectionsConnectionsMicrowaves are higher frequency RF wavesMicrowaves are higher frequency RF wavesIn he ! o !" #$z range of he elec romagne icIn he ! o !" #$z range of he elec romagne ics%ec rum &nown as su%er high frequency 'S$F(s%ec rum &nown as su%er high frequency 'S$F( )and)and

Microwave owers are ins alled roughly !* milesMicrowave owers are ins alled roughly !* miles'*+ &ilome ers( a%ar from each o her '*+ &ilome ers( a%ar from each o her Fi,ed wirelessFi,ed wireless

-ireless as he las mile connec ion for )uildings-ireless as he las mile connec ion for )uildingsac&haul connec ionac&haul connec ion

/om%any0s in ernal infras ruc ure connec ion/om%any0s in ernal infras ruc ure connec ion


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!!

Free Space OpticsFree Space Optics

Free s%ace o% ics 'FS1(Free s%ace o% ics 'FS1(1% ical wireless %oin 3 o3%oin line31% ical wireless %oin 3 o3%oin line3of3sigh )road)and echnologyof3sigh )road)and echnology

4,cellen al erna ive o high3s%eed4,cellen al erna ive o high3s%eedfi)er3o% ic ca)lefi)er3o% ic ca)le/an ransmi u% o 5.2* #)%s a a/an ransmi u% o 5.2* #)%s a adis ance of 6 miles '+.6 &ilome ers( indis ance of 6 miles '+.6 &ilome ers( infull3du%le, modefull3du%le, mode7ses infrared 'IR( ransmission7ses infrared 'IR( ransmissionins ead of RFins ead of RF

8 9ransmissions are sen )y low39ransmissions are sen )y low3%owered invisi)le infrared )eams%owered invisi)le infrared )eams

hrough he o%en air hrough he o%en air FS1 is a line3of3sigh echnologyFS1 is a line3of3sigh echnology


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66


(continued)(continued) Advan ages of FS1 Advan ages of FS1/os/os

S%eed of ins alla ionS%eed of ins alla ion9ransmission ra e9ransmission ra eSecuri ySecuri y

Disadvan ages of FS1Disadvan ages of FS1 A mos%heric condi ions im%ac FS1 A mos%heric condi ions im%ac FS1

ransmissionsransmissions


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**


(continued)(continued)Disadvan ages of FS1 'con inued(Disadvan ages of FS1 'con inued(

FS1 overcomes )y sending he da a in %arallelFS1 overcomes )y sending he da a in %arallel

s reams 's%a ial diversi y(s reams 's%a ial diversi y(8 From several se%ara e laser ransmi ersFrom several se%ara e laser ransmi ers

Dealing wi h fogDealing wi h fog8 Increase he ransmi %ower of he signalIncrease he ransmi %ower of he signal

Signal in erferenceSignal in erference9all )uildings or owers can dis ru)9all )uildings or owers can dis ru)

8 Affec ing he aim of he )eam Affec ing he aim of he )eam


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LMDSLMDS

:MDS ; :ocal Mul i%oin Dis ri)u ion Service:MDS ; :ocal Mul i%oin Dis ri)u ion Service:oca ed in 2< #$z and !5 #$z )ands:oca ed in 2< #$z and !5 #$z )ands

road)and radio service designed o %rovideroad)and radio service designed o %rovidewo way ransmission of voice high s%eedwo way ransmission of voice high s%eed

da a and videoda a and video:ow %owered ransmi ers )roadcas voice:ow %owered ransmi ers )roadcas voice

da a and video signals in me ro%oli an areasda a and video signals in me ro%oli an areas


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==

Local Multipoint DistributionLocal Multipoint Distribution

Service (LMDS)Service (LMDS):ocal mul i%oin dis ri)u ion service ':MDS(:ocal mul i%oin dis ri)u ion service ':MDS(Fi,ed )road)and echnology ha can %rovide a wideFi,ed )road)and echnology ha can %rovide a widevarie y of wireless servicesvarie y of wireless services

8 $igh3s%eed In erne access$igh3s%eed In erne access8 Real3 ime mul imedia file ransfer Real3 ime mul imedia file ransfer 8 Remo e access o local area ne wor&sRemo e access o local area ne wor&s8 In erac ive video video3on3demand video conferencingIn erac ive video video3on3demand video conferencing8 9ele%hone service9ele%hone service

/an ransmi from *5 o 5** M)%s downs ream and 5.*6/an ransmi from *5 o 5** M)%s downs ream and 5.*6M)%s u%s reamM)%s u%s ream

8 1ver a dis ance of u% o a)ou * miles '< &ilome ers(1ver a dis ance of u% o a)ou * miles '< &ilome ers(


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>>

Local Multipoint DistributionLocal Multipoint Distribution

Service (LMDS) (continued)Service (LMDS) (continued)FrequencyFrequencyased on high frequency low3%owered signals overased on high frequency low3%owered signals over

shor dis ancesshor dis ances

:MDS used he following ranges of frequencies:MDS used he following ranges of frequencies8 2=.* M$z and 2.2* M$z2>.5 M$z and 2>.2* M$z8 !" #$z !5."=* #$z and !5.22* #$z!" #$z !5."=* #$z and !5.22* #$z

Archi ec ure Archi ec ure/ells 'li&e a cellular ele%hone sys em(/ells 'li&e a cellular ele%hone sys em(:MDS is a fi,ed wireless echnology for )uildings:MDS is a fi,ed wireless echnology for )uildings


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MMDSMMDS

MMDS 3 Mul ichannel Mul i%oin Dis ri)u ionMMDS 3 Mul ichannel Mul i%oin Dis ri)u ionServiceServiceF// regula ed wireless ca)le sys emF// regula ed wireless ca)le sys emDelivery of mul i%le video signals via %oin 3 o3Delivery of mul i%le video signals via %oin 3 o3mul i%oin microwave ransmissionsmul i%oin microwave ransmissions/om%rised of !! microwave frequencies in/om%rised of !! microwave frequencies in2.* #$z )and2.* #$z )and


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5555

Multichannel MultipointMultichannel Multipoint

Distribution Service (MMDS)Distribution Service (MMDS)Mul ichannel mul i%oin dis ri)u ion serviceMul ichannel mul i%oin dis ri)u ion service'MMDS('MMDS(

Fi,ed )road)and wireless echnology similar o :MDSFi,ed )road)and wireless echnology similar o :MDS/an ransmi video voice or da a signals a 5.* o 2/an ransmi video voice or da a signals a 5.* o 2M)%s downs ream and !2" K)%s u%s reamM)%s downs ream and !2" K)%s u%s ream

8 A dis ances of u% o !* miles '*+ &ilome ers( A dis ances of u% o !* miles '*+ &ilome ers(

MMDS is some imes called wireless ca)leMMDS is some imes called wireless ca)le8 /an )roadcas !"" channels/an )roadcas !"" channels

In erne access using MMDS is an al erna ive oIn erne access using MMDS is an al erna ive oca)le modems and DS: serviceca)le modems and DS: service


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5252


Distribution Service (MMDS)Distribution Service (MMDS)(continued)(continued):ayou:ayouMMDS hu) is y%ically loca ed on a high %oinMMDS hu) is y%ically loca ed on a high %oin

8 7ses a %oin 3 o3mul i%oin archi ec ure ha mul i%le,es7ses a %oin 3 o3mul i%oin archi ec ure ha mul i%le,escommunica ions o mul i%le userscommunica ions o mul i%le users

9ower has a )ac&haul connec ion o carrier0s ne wor&9ower has a )ac&haul connec ion o carrier0s ne wor&8 /arrier ne wor& connec s wi h he In erne/arrier ne wor& connec s wi h he In erne

MMDS signals can ravel longer dis ancesMMDS signals can ravel longer dis ances8 ?rovide service o an en ire area wi h only a few radio?rovide service o an en ire area wi h only a few radio

ransmi ersransmi ers

MMDS cell size can have a radius of u% o !* miles '*+MMDS cell size can have a radius of u% o !* miles '*+&ilome ers(&ilome ers(


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5!5!

Mul ichannel Mul i%oin Dis ri)u ionService 'MMDS( 'con inued(


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5656


Distribution Service (MMDS)Distribution Service (MMDS)(continued)(continued) Advan ages of MMDS Advan ages of MMDSSignal s reng hSignal s reng h

/ell size/ell size/os/os

Disadvan ages of MMDSDisadvan ages of MMDS?hysical limi a ions?hysical limi a ionsFrequency sharingFrequency sharingSecuri ySecuri y

Availa)ili y of he echnology Availa)ili y of he echnology


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CharacteristicsCharacteristics

/onfigura ion similar o cellular@/onfigura ion similar o cellular@Receiver is fi,ed ' y%ically using a roof o%Receiver is fi,ed ' y%ically using a roof o%direc ional an enna(direc ional an enna(/om%e e wi h es a)lished wired services such/om%e e wi h es a)lished wired services suchas ele%hone and ca)le elevision and wiredas ele%hone and ca)le elevision and wiredIn erne services such as ca)le modem DS:In erne services such as ca)le modem DS:and fi)er and fi)er /ould )e used o quic&ly de%loy services o a/ould )e used o quic&ly de%loy services o alarge %o%ula ion 'in coun ries where ele%honelarge %o%ula ion 'in coun ries where ele%honeor ca)le elevision services are no wides%reador ca)le elevision services are no wides%read


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Wireless Spectrum (1)Wireless Spectrum (1)

30 MHz 30 GHz3 GHz300 MHz

Broadcast TV • VHF: 54 to 88 MHz, 174 to 216 MHz• UHF: 470 to 806 MHz

FM Radio• 88 to 108 MHz

Digital TV • 54 to 88 MHz, 174 to 216 MHz, 470 to 806 MHz


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Wireless Spectrum ( )Wireless Spectrum ( )

30 MHz 30 GHz3 GHz300 MHz

Wireless "#$ %&&&'()*++b,g!• 2.4 GHz

"ocal Multi-oint DistributionServices "MDS!• 27.5-31.3 GHz

Bluetooth• 2.45 GHz

Wireless "#$%&&& '()*++a!

• 5 GHz


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Wireless SpectrumWireless Spectrum

7se microwave millime er wave )ands7se microwave millime er wave )ands)e ween 2 and 6* #$zB)e ween 2 and 6* #$zB-ide frequency )andwid h alloca edB from-ide frequency )andwid h alloca edB froma few hundred megaher z u% o more hana few hundred megaher z u% o more han5 #$z5 #$zMMDS uses he )and 2.* #$z '2*""3MMDS uses he )and 2.* #$z '2*""32+>" and (2+>" and (:M/S :MDS use he )ands 26 2< !5 or:M/S :MDS use he )ands 26 2< !5 or6" #$z 'varies wi h coun ry(6" #$z 'varies wi h coun ry(


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!pplications!pplications

9wo3way communica ions@9wo3way communica ions@/an )e used for he ransmission of voice da a and/an )e used for he ransmission of voice da a andvideo e.g.video e.g.

video )roadcas ingvideo )roadcas ing%ay3%er3view%ay3%er3viewvideo3on3demandvideo3on3demandvideoconferencevideoconference

In erne accessIn erne access ele%hony fa, e c.ele%hony fa, e c.. Ins ruc ional 9elevision Fi,ed Service 'I9FS( licenses. Ins ruc ional 9elevision Fi,ed Service 'I9FS( licenses


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"##ect o# $ain"##ect o# $ain A enua ion due o rain A enua ion due o rain

?resence of raindro%s can severely degrade he?resence of raindro%s can severely degrade herelia)ili y and %erformance of communica ion lin&srelia)ili y and %erformance of communica ion lin&s9he effec of rain de%ends on dro% sha%e dro% size9he effec of rain de%ends on dro% sha%e dro% sizerain ra e and frequencyrain ra e and frequency

4s ima ed a enua ion due o rainB4s ima ed a enua ion due o rainB

8 A C a enua ion 'd &m( A C a enua ion 'd &m(8 R C rain ra e 'mm hr(R C rain ra e 'mm hr(8 a and ) de%end on dro% sizes and frequencya and ) de%end on dro% sizes and frequency

baR # =


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"##ects o# %e etation"##ects o# %e etation

9rees near su)scri)er si es can lead o9rees near su)scri)er si es can lead omul i%a h fadingmul i%a h fadingMul i%a h effec s from he ree cano%y areMul i%a h effec s from he ree cano%y arediffrac ion and sca eringdiffrac ion and sca eringMeasuremen s in orchards foundMeasuremen s in orchards foundconsidera)le a enua ion values when heconsidera)le a enua ion values when hefoliage is wi hin +" of he firs Fresnel zonefoliage is wi hin +" of he firs Fresnel zoneMul i%a h effec s highly varia)le due o windMul i%a h effec s highly varia)le due o wind


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Covera e !nd Capacit'Covera e !nd Capacit'

A single MMDS cell is ca%a)le of serving A single MMDS cell is ca%a)le of servingu% o a *" Km radius coverage areau% o a *" Km radius coverage area

:ocal Mul i3%oin Dis ri)u ion Service:ocal Mul i3%oin Dis ri)u ion Service':MDS( in con ras cover an area wi h':MDS( in con ras cover an area wi honly a * 3< Km radiusonly a * 3< Km radius


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!rchitecture!rchitecture


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1 GHz 2.5 3.5 5.8 10 24 26 28 38 40 60

:1S:1S

500020001350100040030020020 30

Voice, Data,

Fax,!D"

2*+ K)%s2*+ K)%s

5 o *"5 o *"M)%sM)%s

# $DM%ea&e' %i(e&

) a (

' * i ' t +

, M H z -

1400200

100

Spectrum !vailabilit'Spectrum !vailabilit'

# Hi + !/ee'(te (et a('

M ti e'ia

# U t aHi +-!/ee'% " "

Eo :1SEo :1S

5" o 5""5" o 5""M)%sM)%s

5"" M)%s5"" M)%s

%MD!MMD! U"

2G+z to 40G+z

U( ice(&e' "atio(a ( o atio( ( a&t ct eM tic+a((e M ti/oi(tDi&t i tio( !e ice

%oca M ti/oi(t Di&t i tio( !e ice


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1 GHz 2.5 3.5 5.8 10 24 26 28 38 40 60

:1S:1S

500020001350100040030020020 30

Voice, Data,

Fax,!D"

2*+ K)%s2*+ K)%s

5 o *"5 o *"M)%sM)%s

# $DM%ea&e' %i(e&

)a('*i't+MHz

1400200

100

Spectrum !vailabilit'Spectrum !vailabilit'

World ideWorld ide# Hi + !/ee'

(te (et a('M ti e'ia

# U t aHi +-!/ee'% " "

Eo :1SEo :1S

5" o 5""5" o 5""M)%sM)%s

5"" M)%s5"" M)%s


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Spectrum *orses #or CoursesSpectrum *orses #or Courses

Less than 6 GHz Less than 6 GHz

:ong range 'u% o !" miles( Eon :1S no affec ed )y:ong range 'u% o !" miles( Eon :1S no affec ed )ywea her wea her :ow3cos equi%men 3 residen ial and S1$1 /?4:ow3cos equi%men 3 residen ial and S1$1 /?4S%ec rum sui a)le for mass mar&e de%loymen sS%ec rum sui a)le for mass mar&e de%loymen s

Greater 6 GHz Greater 6 GHz

:1S shor range '53! miles( affec ed )y wea her more:1S shor range '53! miles( affec ed )y wea her mores%ec rum '5#hz(s%ec rum '5#hz(S%ec rum used s%ecifically for ur)an de%loymen s oS%ec rum used s%ecifically for ur)an de%loymen s o:arge )usiness or Mul i3 enan uni s:arge )usiness or Mul i3 enan uni s


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$each Distance From *ub$each Distance From *uboi(t-to- oi(t %i(;& oi(t-to-M ti/oi

28 GHz

38 GHz

5.34 6.92

= && e , !i( e @+a((e /e $ a(& itte , &a e /o*e , &a e ') ai( a(te((ae& o a eA e(cie&.

== && e , 6c a(te((ae o 99.995B a e a ea ai a i itC, e tica /o a izatio(.

3.577.5 5.0

2.5 GHz

20.050.0

23 GHz

6 GHz

28 GHz

2.5 GHz

24 GHz

40


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+2+ vs +2M++2+ vs +2M+

2'e'icate'

a('*i't+

2M &+a e'

a('*i't+

2M !ecto


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Cost per Subscriber b'Cost per Subscriber b'

,et or-,et or-

@ @o&t

PTP

PMP

E o ! &c i e &

@ o & t

: e 0

! 1

8 & c 0 i

8 e 0

$+i& i& t+e /oi(t at*+ic+ M eco e& o eeco(o ica C ia e t+a(

a $ (et*o ;, e(e a C 8 i(;&.

d db d li#i d / db d Wi l


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.ni#ied /roadband Wireless.ni#ied /roadband Wireless$e#erence !rchitecture$e#erence !rchitecture

!ta('a ' .F.

i e e&&!e ice

Mo' e&

! a ice

) a(c+ice

! H$e eco te

)

@ "et*o ;&

('-to- (' !e ice&, "et*o ; Ma(a e e(t,o i&io(i( "D )i i(

)ac;+a "et*o ;

F@@ @o / ia(t


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0e' Features0e' Features

I? ?ac&e ased Solu ion wi h D1/SIS 5.5 su%%orI? ?ac&e ased Solu ion wi h D1/SIS 5.5 su%%or7% o 66.6 M)%s full3du%le, hrough%u7% o 66.6 M)%s full3du%le, hrough%u7% o 2* Miles in connec ion dis ance7% o 2* Miles in connec ion dis anceFi)er quali y lin&Fi)er quali y lin&

5" 5" 355355 4R for Da a 5"4R for Da a 5" 3


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he +roblemhe +roblem

I

J

%i(e-o -!i +t:

$+e tec+(o o C, *+i e / o i&i( , co(ti( e& to +a e (a i( K i(e-o -&i +tKi&& e&. i e e&& &i (a & i( t+e&e &C&te & &t +a e a c ea /at+ to t a e a&t+eC o (ce o oo to/ to oo to/. $ ee&, i 'i( & a(' e e( i(c e e(t*eat+e , & c+ a& &(o* a(' /e ti( ai(, ca( ca &e &tatic, ' o//e' ca & a('+azC co((ectio(&.

"eslie Caule. sta// re-orter in The Wall Street 0ournal1s $e2 or4 bureauSe-tember )(5 +666


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he Solutionhe SolutionH1FDM 'Hec or 1r hogonalH1FDM 'Hec or 1r hogonal

Frequency DivisionFrequency DivisionMul i%le,ing(Mul i%le,ing( echnologyechnologyem%loys )o h frequency andem%loys )o h frequency ands%a ial diversi ys%a ial diversi ycrea es a ro)us %rocessingcrea es a ro)us %rocessing

echnique for mul i%a h fadingechnique for mul i%a h fadingand narrow )and in erferenceand narrow )and in erferenceH1FDM ena)les grea erH1FDM ena)les grea ercoveragecoveragesu)s an ially reduces :1Ssu)s an ially reduces :1Slimi a ionslimi a ions

L

! &c i e

)a&e!tatio(

at+&

L


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!+!+

Summar'Summar'-MAEs are a grou% of echnologies-MAEs are a grou% of echnologies

?rovide wireless connec ivi y hroughou an area such as?rovide wireless connec ivi y hroughou an area such asa ci y wi hou ca)le infras ruc urea ci y wi hou ca)le infras ruc ure

:as mile wired connec ions are he lin& )e ween he:as mile wired connec ions are he lin& )e ween hecus omer0s %remises and an IS?cus omer0s %remises and an IS?9ransmission echniques9ransmission echniques

road)and and )ase)androad)and and )ase)and

:and3)ased fi,ed )road)and wireless echniques:and3)ased fi,ed )road)and wireless echniquesFree s%ace o% ics 'FS1(Free s%ace o% ics 'FS1(:ocal mul i%oin dis ri)u ion service ':MDS(:ocal mul i%oin dis ri)u ion service ':MDS(Mul ichannel mul i%oin dis ri)u ion service 'MMDS(Mul ichannel mul i%oin dis ri)u ion service 'MMDS(

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