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Delivery Platforms – What's available?
Delivery Platforms – What's available?
Delivery Platforms – What's available?
Delivery Platforms – What's available?
Delivery Platforms – What's available?
Delivery Platforms – What's available?
Delivery Platforms – What's available?
Delivery Platforms – What's available?
Delivery Platforms – What's available?
Delivery Platforms – What's available?
Delivery Platforms – What's available?
Delivery Platforms – What's available?
Delivery Platforms – What's available?
Delivery Platforms – What's available?
Delivery Platforms – What's available?
Delivery Platforms – What's available?
Delivery Platforms – What's available?
Delivery Platforms – What's available?
Delivery Platforms – What's available?
Delivery Platforms – What's available?
Delivery Platforms – What's available?
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Delivery Platforms – What's available?

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  • Mobile TV trials: radio and TV programs, radio had highest listening time
  • Interference of PLT
  • Transcript

    • 1. Digital radio platforms in Europe Eurosonic conference - Bruxelles – 10th May 2007 Mathias Coinchon EBU Technical department
    • 2. Presentation plan <ul><li>Overview of digital systems </li></ul><ul><li>Aspects to consider, categorisation, frequencies </li></ul><ul><li>Focus on European digital radio broadcasting systems </li></ul><ul><ul><li>DAB family of standards: DAB/DAB+/(T-DMB) </li></ul></ul><ul><ul><li>Digital Radio Mondiale </li></ul></ul><ul><li>Future and conclusion </li></ul>This presentation does not cover on-demand, delayed delivery platforms (also called non-linear radio)
    • 3. Analogue broadcasting AM 1906 FM ~1955 (published: 1936)
    • 4. Digital systems... and more to come .... ISDB-T
    • 5. Aspects to consider <ul><li>Network costs </li></ul><ul><ul><li>Coverage objectives: % country/population, audience, indoor reception </li></ul></ul><ul><ul><li>Number of programmes / audio quality </li></ul></ul><ul><li>User </li></ul><ul><ul><li>Free to air services </li></ul></ul><ul><ul><li>Simplicity of use/installation, portability, receiving costs, battery life </li></ul></ul><ul><ul><li>Zapping time, service following </li></ul></ul><ul><li>Associated data </li></ul><ul><ul><li>Pictures, text, interactivity, (video) </li></ul></ul><ul><ul><li>Other information: traffic information, announcements </li></ul></ul>
    • 6. Nature of systems <ul><li>Terrestrial: small to large scale coverage, indoor </li></ul><ul><ul><li>Radio: DAB, DRM, IBOC/HD radio (USA) </li></ul></ul><ul><ul><li>TV: DVB-T, DVB-H, T-DMB, MediaFlo, ISDB-T </li></ul></ul><ul><li>Satellite: large scale coverage, no indoor </li></ul><ul><ul><li>Radio: Worldspace, XM/Sirius (USA), ESA </li></ul></ul><ul><ul><li>TV: DVB-S, DVB-TH (hybrid terrestrial/satellite) </li></ul></ul><ul><li>Telecommunication systems: designed for one to one </li></ul><ul><ul><li>Mobile phones: 3G UMTS </li></ul></ul><ul><ul><li>Internet using Wifi, Wimax,.... </li></ul></ul>
    • 7. Resources: frequencies <ul><li>Long, medium and short waves (<30MHz): DRM </li></ul><ul><li>Band I (47-68MHz): (DRM+) </li></ul><ul><li>Band II (87.5-108MHz): FM, (DRM+) </li></ul><ul><li>Band III (174-230MHz): DAB, DVB-T </li></ul><ul><li>Band IV & V (470-862MHz): DVB-T/DVB-H </li></ul><ul><li>Band L (1452-1490MHz): DAB, Satellite radio </li></ul>Antenna size Transmitters density <ul><ul><li>Low frequencies: large scale terrestrial coverage </li></ul></ul><ul><ul><li>High frequencies: local terrestrial coverage </li></ul></ul>All European countries now have band III spectrum available for DAB
    • 8. The DAB Family <ul><li>Eureka-147/DAB Family </li></ul><ul><ul><li>Initially: Audio. </li></ul></ul><ul><ul><li>Now: Audio, video & other data services. </li></ul></ul><ul><li>Common DAB transmission system </li></ul><ul><ul><li>“ Bouquet” of services (Multiplex) on a single DAB frequency </li></ul></ul><ul><ul><li>Coexistence of different types of services is possible </li></ul></ul>1993 2005 2007 2005 DAB transmission system DAB Audio DAB-IP T-DMB DAB+
    • 9. DAB <ul><li>Terrestrial Digital Audio Broadcasting transmission system </li></ul><ul><ul><li>Robust for Mobile (up to 300km/h) </li></ul></ul><ul><ul><li>Single Frequency Network: no frequency changes, combined power </li></ul></ul><ul><li>Audio services with MPEG Layer II </li></ul><ul><ul><li>192-256kbps for good quality stereo, 128kbps for moderate quality </li></ul></ul><ul><li>Data services </li></ul><ul><ul><li>PAD: Program associated data (text, pictures, web, guide) </li></ul></ul><ul><ul><li>Announcements, traffic information </li></ul></ul><ul><li>>350 receiver models, starting from 50€ </li></ul>
    • 10. DAB+ <ul><li>System for transporting MPEG-4 AAC audio over DAB </li></ul><ul><ul><li>Good audio quality at low bitrates => more audio or other services </li></ul></ul><ul><ul><li>Inherits all DAB features designed for radio </li></ul></ul><ul><ul><li>DAB receivers are incompatible but DAB+ ones will receive DAB </li></ul></ul><ul><ul><li>First receivers in 2007, chipset already available </li></ul></ul><ul><li>Good option for new comers </li></ul><ul><ul><li>Australia has already chosen DAB+ </li></ul></ul><ul><li>Others: migration plans can be considered </li></ul><ul><ul><li>New services with DAB+ </li></ul></ul>
    • 11. DAB/DAB+ Capacity <ul><li>DAB stereo audio at 128kbps </li></ul><ul><ul><li>up to 9 services per multiplex </li></ul></ul><ul><li>DAB+ stereo audio at 64 kbps </li></ul><ul><ul><li>up to 18 services per multiplex </li></ul></ul>
    • 12. DAB+ Audio at 48kbps <ul><li>DAB+ Audio at 48kbps </li></ul><ul><li>Audio demonstration </li></ul><ul><ul><li>Normal DAB at 48kbps (stereo) </li></ul></ul><ul><ul><li>DAB+ at 48kbps </li></ul></ul><ul><ul><li>Original extract </li></ul></ul><ul><li>Audio quality improvement </li></ul><ul><ul><li>Higher bitrate necessary for Hi-Fi </li></ul></ul><ul><ul><li>Planned EBU listening tests (B/DABA group) </li></ul></ul>24 audio services
    • 13. T-DMB: Terrestrial Digital Multimedia Broadcasting <ul><li>Mobile television system over DAB </li></ul><ul><ul><li>MPEG-4 video and audio (BSAC or AAC) </li></ul></ul><ul><ul><li>~150 receivers models: Car GPS, mobile phone, portable devices </li></ul></ul><ul><li>Can be used for radio with pictures but </li></ul><ul><ul><li>Increased overhead => less programs ( ~normal DAB ) </li></ul></ul><ul><ul><li>Video component is necessary for the receivers </li></ul></ul><ul><ul><li>Longer zapping time </li></ul></ul><ul><li>T-DMB receivers include normal DAB reception </li></ul>
    • 14. DAB-IP <ul><li>IP transport over DAB </li></ul><ul><li>Flexibility of IP for transporting multimedia services </li></ul><ul><li>No specification for service description, formats,... </li></ul><ul><ul><li>Suitable for vertical markets like mobile operators who control their mobile receivers park </li></ul></ul><ul><li>BT Movio in the UK: Multimedia services (video) + DAB radio programs </li></ul><ul><li>DAB-IP enabled phone receive normal DAB (and probably DAB+ in the near future) </li></ul>
    • 15. DAB multiplex composition example Legacy DAB receiver DAB+ receiver T-DMB receiver
    • 16. DRM: Digital Radio Mondiale <ul><li>Digital system for long, medium and shortwave </li></ul><ul><ul><li>Improved audio quality compared to AM (but lower than FM) </li></ul></ul><ul><ul><li>Easy tuning </li></ul></ul><ul><ul><li>Large scale coverage with few transmitters </li></ul></ul><ul><ul><li>Limited capacity, sensitivity to interferences </li></ul></ul><ul><li>DAB(+)/DRM receivers (alliance) </li></ul><ul><li>Complementary to DAB standards </li></ul><ul><li>DRM+: project of modified DRM for frequency bands I (TV) and II (FM band) </li></ul>
    • 17. Internet radio receiver <ul><li>Home device that enable Internet radio listening (streaming) without a PC </li></ul><ul><ul><li>Wifi or cable (Ethernet) connection </li></ul></ul><ul><li>Huge choice of stations </li></ul><ul><li>Not so trivial to install/configure </li></ul><ul><ul><li>Broadband connection necessary </li></ul></ul><ul><ul><li>Some technical knowledge necessary for the setup and configuration </li></ul></ul><ul><li>Limited range (home device) </li></ul><ul><li>Suitable for small audience programs </li></ul><ul><ul><li>Big audiences leads to high distribution costs for the broadcaster </li></ul></ul>
    • 18. Digital world <ul><li>The digital world construction..... </li></ul><ul><li>(Picture: The Tower of Babel by Pieter Bruegel, 1563) </li></ul>
    • 19. Software defined radio <ul><li>Software defined radio </li></ul><ul><ul><li>Similar hardware for different standards </li></ul></ul><ul><ul><li>Software demodulation/decoding => updates/adaptations possible </li></ul></ul><ul><li>Issue: costs of standard patents (IPR licences) </li></ul>FM/DAB/DAB+/Wifi Receiver module
    • 20. Conclusions <ul><li>Consider the objectives for radio and network costs </li></ul><ul><ul><li>Availability of frequencies </li></ul></ul><ul><li>European radio broadcasting standards </li></ul><ul><ul><li>DAB/DAB+: national/regional/local coverage, large audience, multimedia </li></ul></ul><ul><ul><li>DRM: international/national/(local) coverage, large audience </li></ul></ul><ul><li>Don’t get confused with plethora of systems </li></ul><ul><ul><li>Marketing overload </li></ul></ul><ul><ul><li>Interoperability with multi-standard receivers (DVB-H/DMB/DAB+) </li></ul></ul><ul><ul><li>Integration of broadcasting standards in mobile phone devices (like FM in today’s mobile phones) </li></ul></ul>
    • 21. Thank you ! Questions ? For more informations: coinchon@ebu.ch

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