a2 general description of 3g.ppt

8/9/2019 A2 General Description of 3G.ppt

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Wireless Curriculum Development SectionWireless Curriculum Development Section

ISSUEISSUE

OWR00001 General Description of 3G

1.01.0


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Confidential

Course Contents

Chapter 1 Introuction to I!"#$000Chapter 1 Introuction to I!"#$000

Chapter $ CD!% &unamentalChapter $ CD!% &unamental

Chapter 3 'erformance Enhancement !ethosChapter 3 'erformance Enhancement !ethos

Chapter ( WCD!% &DD !oeChapter ( WCD!% &DD !oe


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1st Generation

1)*0s +analo,-

$n Generation

1))0s +i,ital-

3r Generation

current +i,ital-

3G provies Complete inte,rate service

solutions /i,h anith Unifie air interface 2est spectral efficienc an

444444 a step toars 'CS

%!'S

%nalo, to Di,ital"%CS

5!"

O"/ERS

GS!

CD!%

IS)6

"D!%

IS#137

'DC

U!"S

WCD!%

CD!%

$000

"D#

SCD!%

Development of !oile Communications

8oice to 2roaan


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Confidential

Stanari9ation Course of I"U I!"#$000

1)*6 &':!"S; rename as I!"#$000 in 1))7

1))$ $30!/9 spectrum as allocate in WRC)$

1))).3 &amil concept ? as aopte in netor= part

Stanari9ation or,ani9ations such as 3G''+1))*.1$-;

3G''$ +1)))- ere estalishe


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"ar,et of I!"#$000

Gloal uniform fre@uenc an an stanar; ,loal

seamless covera,e

/i,h efficient spectrum utilit

/i,h @ualit of service; hi,h securit

Eas for evolution from $G sstem

'roviin, multimeia service

Car spee environment 1((=ps

Wal= spee environment 3*(=ps Inoor environment $0(*=ps


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Confidential

Stanars for 3G

3G sstem

CD!%$000

3G''$

&DD moe

WCD!%

3G''&DDA"DD moe

"D#SCD!%

CW"S

"DD moe


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Main CDMA 3G Proposals

Re,ional Stanar

Or,ani9ation+RSO-

Raio "ransmission

"echnolo,+R""-

U.S. TIA(TR 45.5) cdma2000

T1 W-CDMA

Korea TTA TTA1(~cdma2000)

TTA2(~W-CDMA)

Japa ARI! W-CDMA

"#rope "TSI(SM$ 2) W-CDMA

C%&a CWTS TD-SCDMA


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Spectrum %llocation of I!"#$000

1*60 1)00 1)60 $000 $060 $100 $160 $$00 $$60

I"U

Europe

US% !SS'CS

A D ! !C D C" ' A '"!SSReserve!roadca a#*&+&ar,

$176 !/91))0 !/9

1*60 1)00 1)60 $000 $060 $100 $16

0

$$0

0

$$6

0

1**0 !/9 1)*0 !/9

U!"SGS! 1*00 DEC" !SS

1**6 !/9 $0$6 !/9

$010 !/9

I!" $000

!SSU!"S

Bapan !SSI!" $000!SSI!" $000'/S

1 8 9 5

1 9 1 8

!C

1 8 8 5

A A

$10 !/9

I!" $000$110 !/9 $10 !/9

!SS !SS

CD!%"DD

W::

&DD

W::

1 9 8 0

$0$6!/9

$SM

100CD!%

&DD

W::

1 9 6 0

1 9 2 0

1 9 4 5

China

cellular(! cellular("! cellular("!

1*06 !/9

1 8 6 5

1 8 6 5

1 8 7 0

1 8 8 5

1 8 9 0

1 8 9 5

1 9 1 0

1 9 3 0

1 9 4 5

1 9 6 5

1 9 7 0

1 9 7 5


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3G Spectrum +%fter W%RC$000-

1850 1900 1950 2000 2050 2100 2150 2200 2250

Reserve

UMTSGSM 1800

D

C T MSS

MSS!MT 2000P "

S MSS!MT 2000

!MT 2000

MSS!MT 2000!MT 2000

!MT 2000

MSSUMTS

MSS

# $ % &' # % C

MSS

MSS MSS

#GSM 1800$ PCS%

'&% %C

!TU !&en'i(i)a'ions

*rope

C+ina,,

-apan$

.orea /o P"S

Aeri)as,,,

1700 1750 1800950 1000800 850 900

!MT 2000!MT 2000

2500 2550 2600 2650 2700

!MT 2000

UMTS

GSM

Cell*lar

PDC

Cell*lar

MSS

GSM

I)*

"+++

!MT 2000

!MT 2000

, P

C S

PCS

- -

$

!MT 2000


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oS Re@uirements of Different Services

"ime ela

ualit +2ER-

ac=,roun

conversational

streamin,

interactive


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Course Contents






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Chapter $ CD!% &unamental

2.1 Radio Transmission Environment 2.1 Radio Transmission Environment

$.$ !ultiple %ccess "echnolo, an

Duple "echnolo,$.3 CD!% 'rinciple an R%


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!ulti#path Environment

"ime

Receive

si,nal

"ransmitte

si,nal


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&ain,

"ransmitte Si,nal

-40

-35

-30

-25

-20

-15

-10

-5

0

d B

Receive Si,nal


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&ain,

Distance+m-

Receive 'oer+2m-

10 $0 30

#$0

#(0

#70

Slo fain,

&ast fain,


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&re@uenc Selection of &ain,

5arroan

Sstem

&ain,

"ransmit Si,nal Receive Si,nalf f

'+f- '+f-

&ain

,

"ransmit Si,nal Receive Si,nalf f

'+f- '+f-

2roaanSstem


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M*l'i4pa'+ C+ara)'eris'i)s o( Moile C+annel

"+ecroma/e&c ram&&o - re+ec&ocaer&/

d&rac&o

S&/a+ ad&/ ca e d&3&ded &o %ree par & rad&o

e3&rome

a% +o 6&% &/ ra/e o ad&/

!&/ ca+e ad&/+o6-peed 6&% m&dd+e ra/e o ad&/ a+o

6&% +o/ar&%m orma+ d&r&#&o c%aracer&&c

Sma++ ca+e ad&/ a-peed 6&% ma++ ra/e o ad&/

T6o ,p&ca+ ,pe o ma++ ca+e ad&/ &c+#de

Ra,+e&/% d&r&#&o (o +&e-o-&/% ram&&o)

R&cea d&r&#&o(+&e-o-&/% ram&&o)


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Ca'eor o( Tpi)al Ra&io C+annel

Sa&c C%ae+

Idoor C%ae+

7#door-o-&door pa3eme C%ae+

8e%&c+e mo#ed C%ae+

Mo3&/ C%ae+

!&r%-dea% C%ae+


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$.1 Raio "ransmission Environment

2.2 Multiple Access Technology and2.2 Multiple Access Technology and

Duplex Technology Duplex Technology

$.3 CD!% 'rinciple an R%


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!ultiple %ccess "echnolo, an Duple

"echnolo,

!ultiple access technolo,

"ime ivision multiple access +"D!%-

&re@uenc ivision multiple access +&D!%-

Coe ivision multiple access +CD!%-

Duple technolo,

"ime ivision uple +"DD-

&re@uenc ivision uple +&DD-


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"raffic channels ifferentusers are assi,ne uni@ue

coe an transmitte over

the same fre@uenc an;

for eample; WCD!% an

CD!%$000

"raffic channels ifferent fre@uenc ans

are allocate to ifferent users;for eample;

%!'S an "%CS

"raffic channels ifferent time slots

are allocate to ifferent users; for

eample; D%!'S an GS!

& r e @ u

e n c 3

" i m e

'oer

& r e @ u

e n c 3

" i m e

'oer

& r e @ u

e n c 3

" i m e

'oer

&D!%

"D!%

CD!%

U s e r

U s e r

U s e r

U s e r

U s e r

U s e r

!ultiple %ccess "echnolo, an Duple

"echnolo,


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Characteristics of CD!% Sstem

/i,h Spectral Efficienc

&re@uenc multiple coefficient is 1.

soft capacit

ualit Covera,e

Interference

Self#interference sstem

% UE transmission poer is interference for another UE.


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'rocessin, 'roceure of CD!% Sstem

Source

coin,

Channel

coin,Spreain, !oulation

Source ecoin,

Channel

ecoin, Despreain, Demoulation

Raio channel


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$.1 Raio "ransmission Environment

$.$ !ultiple %ccess "echnolo, an

Duple "echnolo,

2.3 CDMA rinciple and RA!E Technology 2.3 CDMA rinciple and RA!E Technology


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correlation

Correlation is a measure of similarit of eteen an to

aritrar si,nals.

EF%!':E

*1 1 #1 1 1 1 1 1

#1 1 #1 1

ero correlation Ortho,onal si,nals

#1 1 #1 1

#1 1 #1 #11 1 1 1 1 correlation

Ientical si,nals

H1

0

#1H1

0

#1

H1

0#1

H1

0

#1


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%utocorrelation

%utocorrelation is relate to the muti#path interference characteristic.

Dela time +chip-

Correlation

Dela time se@uence correlation

0 #1 #1 #1 1 1 #1 1 1

1 #1 #1 1 1 #1 1 #1 #1A $ #1 1 1 #1 1 #1 #1 #1A

3 1 1 #1 1 #1 #1 #1 #1A

( 1 #1 1 #1 #1 #1 1 #1A 6 #1 1 #1 #1 #1 1 1 #1A

7 1 #1 #1 #1 1 1 #1 #1A

1

Eample #1 #1 #1 1 1 #1 1


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Confi,uration of Gol Se@uence Generator

clong00n

clong0"0n

S% LS%

Gol se@uence is use as scramlin, coe in WCD!%


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Spreain, an Despreain, +DS#CD!%-

Spreading

$espreading

Chip

Sym2ol

$ata

Spreading code

Spreading signal

$ata3code

$ata

Spreading3code

1

-1

1

-1

1

-1

1

-1

1

-1

Spreading code


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$esired signal

4ther user5s signal

$esired spreading signal

Spreading code

$ata after despreading

4ther spreading signal

4ther signal after integration

1

-1

1

-1

1

-1

-

1

-1

-

$ata after integration

4ther signal after despreading

Spreain, an Despreain, +DS#CD!%-


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Spreain, coe

Sprea&in )o&e

Si,nal

Comination

Spectrum %nalsis of Spreain, Despreain,

5arroan si,nal

f

'+f-

2roaan si,nal

'+f-

f

5oise

'+f-

f

5oiseHroa&an& sinal

'+f-

f

Recovere si,nal

'+f-

f


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'rinciple of R%


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Structure of R%


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%vanta,es of CD!%

R%


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Course Contents






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Introuction to Diversit "echni@ue

Reuce the effects of fain,

fast fain, cause multipath

Slo fain, cause shaoin,

Improve the reliailit of communication

Increase the covera,e an capacit

!acroscopic iversit

Soft hanover an softer hanover Reuce lar,e#scale fain,

!icroscopic iversit

Diversit techni@ue is use to otain uncorrelate

si,nals for cominin,


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!icroscopic Diversit

"ime iversit

Channel coin,; 2loc= interleavin,; error#correction

&re@uenc iversit

"he user si,nal is istriute on the hole anith

fre@uenc spectrum

Space iversit

Receive iversit

"ransmit iversit

'olari9ation iversit

8ertical polari9ation

/ori9ontal polari9ation


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2asic Cominin, !ethos

!aimal#Ratio Cominer "he mutipath si,nals are ei,hte proportional to their

si,nal S5R an then summe.

E@ual#Gain Cominer

E@ual#,ain cominin, is similar to maimal#ratiocominin,; ut there is no attempt to ei,ht the si,nal

efore aition.

Selection Cominer

Choose the si,nal ith the hi,hest instantaneous @ualit;

so the output @ualit is e@ual to that of the est incomin,

si,nal.


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CDMA R:T: Diversi'

'or6ard +&9 capac&, & %e o+e ec9 o CDMA ce++#+ar

,em capac&,. WCDMA adard %a deep+, reearc%ed

%e app+&ca&o o ram&&o d&3er&,. :e6 ram&

d&3er&, c%eme %a ee p# or6ard. I 6&++ &mpro3e

or6ard +&9 capac&,.

7pe +oop ram&&o d&3er&,

ram& d&3er&, aed o pace-&me +oc9 cod&/ (STTD)

T&me 6&c%ed ram& d&3er&, o SC; (TSSD)

C+oed +oop ram&&o d&3er&, '!I doma&

S&e e+ec&o d&3er&,(macro d&3er&,) ce++ e+ec&o '!I

doma&

T i'' A ' Di i'


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Transi''er An'enna Diversi'

ase& on Tie4spa)e lo); Co&in

2" 2+ 2 21

2+ 2 2" 21

*2" 21 2+ *2

#ntenna

#ntenna "

Channel 2its

S))$ encoded channel 2its

for antenna and antenna ".


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Tie Si')+e& Transi' Diversi' on SC"

A)ea 1

A)ea 2

ac(

acp

ac(

acp

ac(

acp

S+o)


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Close&


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Re)eivin ((e)'s (or Di((eren' M*l'i4pa'+ Diversi'

5 10 15

S N R（dB)

0.0001

0.001

0.01

0.1

1

E

1 path rayl

2 path rayl

5 path rayl

No atte!at"o


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Smart %ntenna

Wante si,nal

interference

Reuce interferenceIncrease covera,e an capacit


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Smart %ntenna

Omni antenna Directional antenna Smart antenna


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Course Contents






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Characteristics of WCD!% &DD

Channel anith 6!/9

Chip rate 3.*(!cps

&rame len,th 10ms

8oice coin, %!R +%aptive !ulti#Rate-

Uplin= an onlin= moulation 'S


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Characteristics of WCD!% &DD

Satisf the minimum performance re@uirement of I!"$000

Compatile ith GS!#!%' core netor=

Comparativel stea version R)) has een release

Support open loop an close loop transmit iversit moe

Support Common 'ac=et Channel+C'C/- an Donlin= Share

Channel; aapt to Internet ata access moe

Support macro iversit; selection iversit of 5oe2 location

Support ifferent fast poer control al,orithms an open loop;out loop poer control

&ull support UE locatin, services


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WCD!% 8oice Evolution

%opt %!R voice coin,; an support voice @ualit of

(.6


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Data Service Evolution of WCD!%

Support maimum $!ps ata service

Support pac=et sitch

%opt %"! platform currentl

'rovie oS

Common 'ac=et Channel+C'C/- an Donlin= Share

Channel+DSC/- can support Internet pac=et services etter

'rovie moile I' service+namic allocation of I' aresses-

"&CI omain provies namic ata rate

'rovie hi,h#@ualit support for uplin=#onlin= smmetric

ata service; such as voice; vieo phone; conference "8


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a2 general description of 3g.ppt

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