Microsoft Power Point CD Ma Technology Roadmap 330

8/4/2019 Microsoft Power Point CD Ma Technology Roadmap 330

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PT. Telekomunikasi Indonesia

1

Setyo Budianto

Manager O&M Network [email protected]

www.setyobudianto.com

Seminar Teknologi GSM vs CDMA



PT. Telekomunikasi Indonesia 2

Content

Wireless World Market

CDMA Technology Overview

CDMA Technology Evolution




Wireless Subscriber in The World




Key Drivers For Wireles Market Expansion

CDMA2000

WCDMA

CDMA2000

WCDMA

More Capacity, High Speed Data

Capacity/Quality

Roaming

Mobility

AMPS

TDMA/GSM

cdmaOne

IS-95A

cdmaOne

IS-95 B

GPRS

cdmaOne

IS-95 B

GPRS

Medium Speed Data

Time

Multi-ModeMulti-Mode

CDMA-GSMCDMA-GSM

Global Roaming

1G 2G 3G2.5G

Multi-BandMulti-Band

Multi-

Network

Multi-

Network




Worldwide 2G and 3G Subscriber Trends




Wireless Handset in India




8

CDMA Technology Overview




FDMA (Frequency Division Multiple Access)

TDMA (Time Div ision Multiple Access)

CDMA (Code Division Multiple Access)

1 user/narrowband channel

4.8 TCH/Mhz/Cell

Capacity depends much on spectrum

8 Users/Narrowband Channel10.0 TCH/Mhz/Cell

Capacity depends much on spectrum

N Users/Wideband Channel

8 kbps vocoder : mobile 56.1 TCH/Mhz/Cell

fixed 86.2 TCH/MHz/Cell

13 kbps vocoder : mobile 29.6 TCH/Mhz/Cell

Capacity depends much on noise level

Multiple Access Technology




A room with several pairs of people withdifferent language

The air in the room is the carrier

The language is the coding system

Other languages are heard as noise

New pairs can join to talk in the same roomuntil it is too noisy

If people whisper, more conversation can takeplace

CDMA - How does coding work?




4 site,12 frequency

repeat

1

11

1

11

111

1

11

1

11

1

11

1

11

111

1

11

1

11

1

11

1

11

1

11

111

1

11

N=1frequency repeat

6543

21

8

79

121011

6

54

3

21

8

79

12

1011

6

54

3

21

87912

1011

6

54

3

21

8

79

12

1011

GSMGSM CDMACDMA

CDMA nearly eliminates cost of

frequency planning

Frequency Planning




The mobile unit is monitored by two or more cell sites

Comparing the best quality frames on frame-by-frame

basis

Take advantage of the moment-by-moment changes

Minimizing drop call and noise during handoffs

Soft Handoff




CDMA Power Control Ensures equal receive power from all subscribers

avoids "near-far" problem

Forward and reverse link power control

MS power measured at cell site and MS is commanded

to change power in small steps (1.25 msec)




Path Diversity

Receiver

Receiver

Receiver

Rake Receiver

GSM

Fading

D/A Audio

Fading

D/AReceiver

CDMA

Effects of fading are mitigated through use of multiple receivers that sum radio signals from

different cells and from reflected rays.

Fading is more likely to cause loss of information =lower speech quality




Frequency Diversity

Outgoing Waveform

-80 dB

-90 db

-110 db

-120 db

1.25 MHz

1.25 MHz

This 400 kHz fade of 12 dB only affects 1/3 of CDMA bandwidth.

Therefore, total fade to CDMA user is 2 dB

Received Waveform

-80 dB

-90 dB

-110 dB

-120 dB

12 dB Fade

2 dB LossCDMA

The entire 30 kHz Channel of TDMA is affected by this same fade.

Therefore, total fade to end user is 12 dB

30 kHz

Outgoing Waveform

-80 dB

-90 dB

-110 dB

-120 dB

30 kHz

Received Waveform

-80 dB

-90 dB

-110 dB

-120 dB

12 dB Fade

12 dB LossTDMA




CDMA 2000 Network Architecture

Circuit Switched Network

MSC

R

AAAServer

HLRWIN

BTS1

BSC1

R

InternetInternet

PC

MS

Application Server

HA

MS

PDSN/FA

PSTNPSTN

Packet Switched Network

IWF

VMS SMS

BTS2

BSC2

RAN

ATM




17

CDMA Technology Evolution




Wireless Services Trend




The 3G Choice is CDMA

IMT-2000 Standard

• 2 Mbps in fixed or in-building environments

• 384 kbps in pedestrian or urban environments

• 144 kbps in wide area mobile environments

• Variable data rates in large geographic area systems

(satellite)




200620052004200320022001200019991995 200620052004200320022001200019991995

In -Band Migration and

Designed forIn-Band Migration andNew Spectrum

3G CDMA

2G CDMA

1.25 MHz

Voice & Data

2.5G CDMA

Rel. 4

HSDPA

Additional voice capacity doubling

- Terminal antenna diversity

Rel. 5

CDMA2000 1X

14.4 kbps data

Soft Handoff

SynchronousTiming

64 kbps packetdata

− Channel

Concatenation

Double voice capacity− Fast Fwd Power Control

− Coherent Uplink

153.6 kbps packet data− Turbo Codes

307 kbpspacket data

Simultaneousvoice and data

Dedicated & OptimizedFor Packet Data2.4 Mbps Peak RatesAll IP Architecture

Improvementsto dataservices.

More flexibledata packet

scheduling.

64/384 kbps cs/packet data

Soft handoff

Asynchronous timing

Improvements

to data services

More flexible data

packet scheduling

cdmaOne

QoS,Broadcast,Personal

Media, IMM ,2x

1xEV-DV

Forward Link:Peak Rate:3.1 mbps

Reverse Link:Peak Rate:

1.8 mbps

Fwd & Rev. Capacity GainsForward Link: Peak Rate 3.1 mbps

Reverse Link: Peak Rate 1.8 mbps

HSUPA

Rel. 6

Enhanced

Up-Link

IS - 95A IS-95B

1.25 MHzOptimized for Data

IS-2000 Rel. 0 Rel. A Rel. B Rel. C Rel. D

Designed for

New Spectrum

5 MHz

Voice & Data

3GPP Rel. 99

CDMA2000 1xEV-DO

UMTS

(WCDMA)

IS-856, Rel. 0 Enhancements Rel. A

3G CDMA Evolution




Mobile Service Evolution




CDMA2000 Deployment




CDMA Terminals




Thank You

Merci

Grazie

Gracias

Obrigado

Danke

Japanese

English

French

Russian

GermanItalian

Spanish

Brazilian PortugueseArabic

Traditional Chinese

Simplified Chinese

Thai

Terima Kasih

Microsoft Power Point CD Ma Technology Roadmap 330

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