1 Tm25822 Satellite Mobile Dvb

7/29/2019 1 Tm25822 Satellite Mobile Dvb

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Satellite - Mobile Broadcasting

44th Meeting of the Technical Moduleof the DVB Project

Geneva, 21st of November 2001

TM 2582


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Satellite - Mobile BroadcastingOverview

Operational & Planned Systems Worldwide :WorldSpace : 1st Satellite Digital Sound Broadcasting (S-DSB)operator, with 2 operational L band (1.4 GHz) satellites (AfriStar &

AsiaStar) and a 3rd (AmeriStar) planned for launch in 2002

Digital Systems DH and DS defined in Recommendation ITU-R BO.1130-4

XM Satellite Radio and Sirius Satellite Radio : each offers seamlessmobile services (SDARS1) throughout the USA in S band (2.3 GHz)

Time magazine named XM a 2001 Invention of the Year

XM s technology is from WorldSpace

Mobile Broadcasting Corp. : recently announced plans to launchsatellite mobile broadcasting services in Japan in S band (2.6 GHz)

Alcatel & WorldSpace, with Fraunhofer IIS as technology partner,forming a consortium of industrial & multimedia players to provide L

band mobile broadcasting services to Europe starting in 20041 SDARS :Satellite Digital Audio Radio Service, US/FCC term for


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Market Goals : Direct digital delivery of audio and multimedia content via satellite and

terrestrial means to consumers in a mobile environment

Seamless coverage solutions for national & international broadcasters Large number of channels

Enhanced Broadcasting Services Will Include :

Real-time broadcasts and push & store services offering radio ondemand by local interactivity

Unique, new formats to address niche markets Pan-European coverage with multilingual programs

Multimedia services (telematics applications, video clips, weather, alertmessages, push IP solutions, news, traffic information...)

Interactivity through cellular links


Markets and Services


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S-DSB is a Mass Market Application : 8 car & truck makers and 17 receiver makers currently factory-install

and/or manufacture S-DSB receivers for the US market

Major surveys in the U.S.A. and Europe validate market for seamless

satellite/terrestrial radio services

ASMS-TF (Advanced Satellite Mobile Systems - Task Force), backed

by ESA & the EC, has identified a significant market opportunity for

seamless European mobile multimedia & broadcasting services

Interoperability is possible with DVB, DAB and Mobile Communication

Networks

S-DSB Business Model :

Multiple revenue streams including leasing, advertisements, and

subscription sales for new services


Markets and Services (continued)


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S-DSB System Concept

Introduction to Hybrid Concept

Comparison With Other Systems

Key Features


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Hybrid System Approach

urban

center

sub-urban

rural

area

Diversity combining of satellite

and (weak) terrestrial signal

Terrestrial repeaters for

areas with low satellite

signal availability

Satellite offers large coverage areas("European coverage")

High link margin to cope with tree

shadowing

Spatial diversity (2 active) satellites forbetter service availability


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S-DSB Hybrid Approach

Versus Other Systems

Spectrum

efficiency

Total power efficiency

(including power amplifier

efficiency)

DVB-T

(64-QAM) DVB-T

DVB-SEU147

Allowed

delay

spread

Allowed vehicle

speed (L-Band)

S-DSB-

SAT

S-DSB-

TERR

S-DSB-TERR

S-DSB-

SAT

DVB-S1

EU147

High power efficiency

for Satellite waveform

Mobile reception for

terrestrial single

frequency networks

Mobile reception of

satellite signals

1) Note: high vehicle speed is possible for

DVB-S in case of LOS reception

DVB-T

(QPSK)


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S-DSB System Features

The Information is Spread in Space and Time by:

Long time interleaver

Spatial diversity using 2 satellites at different orbit

positions (optionally, system can use 1 Satellite only)

Efficient diversity combining technology

Power Efficient Satellite Waveform / QPSK TDM

Good Eb/N0 performance (2.4dB for AWGN channel)

Low crest factor -> Efficient use of satellite power

Full Mobile Reception / OFDM

High Doppler spread High delay spread

Efficient Source Coding

US SDARS systems: More than 200 audio programs

in 25MHz bandwidth

Time Space Codes

High Satellite Power

Efficiency

High System Capacity

Multipath Resistant

Terrestrial Waveform


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Interworking Between S-DSB

and DVB Standard

SDARS Systems Need Adaptation for EuropeanMarket

Different marketing requirements (to be discussed

with DVB-CM)

Better synergy/interoperability with other systems

Compatibility with frequency planning (e.g. CEPT,Wiesbaden conference) is a key requirement

Data Packets Concept is Already Used

Packet size can be adapted to MPEG transport

stream characteristics to make systems

compatible at multiplex layer

High reuse of technology possible

Short time-to-market

Streaming of Audio and Data is the Main

Application

Packetized Data Stream

European Market isDifferent from US Market

DVB-S, DVB-C, DVB-T S-DSB = DVB-Satellite Mobile Broadcasting" ?

MPEG 4 Based


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Satellite Mobile BroadcastingConclusion

Satellite Mobile Broadcasting Concept is Consistent

With the New DVB Vision (DVB v2)

It Will Serve the Following Key Objectives:

Enhanced mobile broadcasting services National and pan European coverage

Mass market

Short time-to-market

It Will Benefit From Field Proven Technology Under Development Worldwide

Opportunity for DVB Project to initiate a Satellite Mobile Broadcasting AdHoc Group


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For Further Information Please Contact: Christian Combe

[email protected]

Phone: +33 5 3435 5083

Hugues Salord

[email protected]: +33 1 4284 3898

Albert Heuberger

[email protected]

Phone: +49 9131 776 6300

Ernst [email protected]

Phone: +49 9131 776 6320

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1 Tm25822 Satellite Mobile Dvb