Satellite - Mobile Broadcasting 44 th Meeting of the Technical Module of the DVB Project Geneva, 21 st of November 2001 TM 2582

Satellite - Mobile Broadcasting Overview 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 D H and D S defined in Recommendation ITU-R BO XM Satellite Radio and Sirius Satellite Radio : each offers seamless mobile services (SDARS 1 ) 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 SDARS : Satellite Digital Audio Radio Service, US/FCC term for "S-DSB"

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

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 Satellite - Mobile Broadcasting Markets and Services (continued)

S-DSB System Concept Introduction to Hybrid Concept Comparison With Other Systems Key Features

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 for better service availability

S-DSB Hybrid Approach Versus Other Systems Spectrum efficiency Total power efficiency (including power amplifier efficiency) DVB-T (64-QAM) DVB-T DVB-S EU147 Allowed delay spread Allowed vehicle speed (L-Band) S-DSB- SAT S-DSB- TERR S-DSB- SAT DVB-S 1 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)

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 E b /N 0 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

Interworking Between S-DSB and DVB Standard SDARS Systems Need Adaptation for European Market Different marketing requirements (to be discussed with DVB-CM) Different marketing requirements (to be discussed with DVB-CM) Better synergy/interoperability with other systems Better synergy/interoperability with other systems Compatibility with frequency planning (e.g. CEPT, Wiesbaden conference) is a key requirement 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 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 is Different from US Market DVB-S, DVB-C, DVB-T S-DSB = DVB-Satellite Mobile Broadcasting" ? MPEG 4 Based

Satellite Mobile Broadcasting Conclusion 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: Christian Combe Phone: Hugues Salord Phone: Hugues Salord Phone: Albert Heuberger Phone: Ernst Eberlein Phone: Albert Heuberger Phone: Ernst Eberlein Phone: