Satellite - Mobile Broadcasting

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					TM 2582

   Satellite - Mobile Broadcasting

  44th Meeting of the Technical Module
           of the DVB Project

          Geneva, 21st of November 2001
              Satellite - Mobile Broadcasting
   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 seamless
     mobile 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 launch
     satellite 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 2004
                               1   SDARS :Satellite Digital Audio Radio Service, US/FCC term for
              Satellite - Mobile Broadcasting
                         Markets and Services
   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 « on
       demand » by local interactivity
      Unique, new formats to address niche markets

      Pan-European coverage with multilingual programs

      Multimedia services (telematics applications, video clips, weather, alert
       messages, push IP solutions, news, traffic information...)
      Interactivity through cellular links
             Satellite - Mobile Broadcasting
                Markets and Services (continued)
   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


   S-DSB Business Model :
        Multiple revenue streams including leasing, advertisements, and
         subscription sales for new services
          S-DSB System Concept

   Introduction to Hybrid Concept

   Comparison With Other Systems

   Key Features
                     Hybrid System Approach

                            Spatial diversity (2 active) satellites for
                            better service availability



                                                               Diversity combining of satellite
                                                               and (weak) terrestrial signal

Terrestrial repeaters for
areas with low satellite                              Satellite offers large coverage areas
signal availability                                   ("European coverage")
                                                      High link margin to cope with tree
                       S-DSB Hybrid Approach
                        Versus Other Systems

                                                                                                 Mobile reception for
Spectrum                                        Allowed                                            terrestrial single
efficiency          High power efficiency       delay                                            frequency networks
                    for Satellite waveform      spread
        DVB-T                                                                EU147
        (64-QAM)                                          DVB-T

     TERR                        S-DSB-                                                   Mobile reception of
                                 SAT                                                       satellite signals
                              DVB-S                   DVB-S1
                   Total power efficiency                                                  Allowed vehicle
                   (including power amplifier                                              speed (L-Band)

                                                          1) Note: high vehicle speed is possible for
                                                          DVB-S in case of LOS reception
                   S-DSB System Features

Time Space Codes          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
High Satellite Power      Power Efficient Satellite Waveform / QPSK TDM
Efficiency                     Good Eb/N0 performance (2.4dB for AWGN channel)
                               Low crest factor -> Efficient use of satellite power
Multipath Resistant       Full Mobile Reception / OFDM
Terrestrial Waveform           High Doppler spread
                               High delay spread
High System Capacity      Efficient Source Coding
                               US SDARS systems: More than 200 audio programs
                                in 25MHz bandwidth
             Interworking Between S-DSB
                  and DVB Standard
European Market is            SDARS Systems Need Adaptation for European
Different from US Market       Market
                                   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
Packetized Data Stream        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
MPEG 4 Based                  Streaming of Audio and Data is the Main

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

            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 Ad
    Hoc Group
   For Further Information Please Contact:
      Christian Combe
                 Phone: +33 5 3435 5083
      Hugues Salord

                 Phone: +33 1 4284 3898
      Albert Heuberger

                  Phone: +49 9131 776 6300
       Ernst Eberlein
                  Phone: +49 9131 776 6320

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