Open Software Platforms for Mobile Digital Broadcasting

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Overview of CRC projects in digital radio software projects. Discussion of potential future projects. Presented in Gatineau to students and professors of Computer Science and Engineering Department of UQO

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Open Software Platforms for Mobile Digital Broadcasting

  1. 1. Open Software Platforms for Mobile Digital Broadcasting François Lefebvre Communications Research Centre, Canada UQO, 4 février 2010 1
  2. 2. Context for Mobile Broadcasting The DAB/DMB System CRC Projects Future? 2
  3. 3. Replacement technologies for Terrestrial Radio + TV Spectrum efficiency / digital dividend Digital enhancements Convergence of services and devices 3
  4. 4. Mobile Convergence 4
  5. 5. Device Convergence 5
  6. 6. The Long Tail Size of Specialized Infrastructure Audience Efficiency: Spectrum, $/bit Head of the Long Tail Very large audiences Live Content ranked by popularity 6
  7. 7. Mobile Digital Broadcasting Standards 7
  8. 8. DAB System Features High speed mobility Capacity: 1.5 Mbps / channel ( 16 Gb / day ) High bitrate AV & Data: Typical video to mobile screen: 384-512 kbps Spectrum: Band III : 174 to 240MHz L-Band : 1452 to 1492MHz Modulation: COFDM Single Frequency Networks 8
  9. 9. DAB/DMB Applications Dynamic label segment (text for radio) Slideshow Broadcast Website Electronic Program Guide Traffic information DMB ... 9
  10. 10. DAB System Transmitter Audio Codec 1 M U Audio L Codec 2 One DAB T Ensemble High Power I Modulator Amplifier Audio P Codec 3 L E . . X . E Audio R Codec N 10
  11. 11. DAB/DMB Applications Video DAB Data Pipeline Audio 1 1.5 Mbps 2 Programs 3 4 5 Subscription Datacasting Services Navigation, Traffic, Weather, Maps, etc. 11
  12. 12. CRC Projects: DAB Transmission 12
  13. 13. Architecture 13
  14. 14. Trend: Software on Generic HW
  15. 15. Software Defined Radio USRP: Ettus research
  16. 16. Software Building Blocks
  17. 17. CRC DAB Software Stack 19
  18. 18. Ubuntu Base System
  19. 19. Ubuntu Minimized
  20. 20. Ubuntu with CRC Tools
  21. 21. mmbTools live CD
  22. 22. “One Click” Transmitter
  23. 23. mmbTools Web Appliances
  24. 24. CRC DAB Projects: Reception
  25. 25. Colliding Business Models ? Broadcaster MNO FTA-TV Pay-TV
  26. 26. Open Handhelds (2007)
  27. 27. No Broadcasting Stack!
  28. 28. Openmokast Stack
  29. 29. Openmokast Architecture Receiver control Demultiplexing Application decoding Presentation
  30. 30. Adapt Openmoko Device
  31. 31. 100$ 3D Print
  32. 32. Adapt Openmoko Device
  33. 33. Openmokast Prototype
  34. 34. Screenshots
  35. 35. Android
  36. 36. Android Openmokast Player Openmokast Player on on T-Mobile G1 Android Market (MAS)
  37. 37. DAB Personal LAB
  38. 38. Licensing Design
  39. 39. Adopt Royalty-Free Tech • In broadcasting: most standards require non-RF tech • Must pay royalties for most CODECS • - Can't distribute free software implementations at large • Foster adoption of RF tech in standards • CRC mmbTools now includes CELT wideband audio CODEC for DAB
  40. 40. mmbTools Community  www.opendigitalradio.org  Tweak USRP for appropriate bands  Build power amplifier  8 streaming internet radio into CRC mmbTools  FM modulator with USRP + Gnu Radio Companion  Receiver manufacturers  Pre-market field trials
  41. 41. Future Projects?
  42. 42. New Software Receiver Platforms  IGEPv2  Beagleboard  Zoom  ... SDR? Multi-standard? Mobile Hotspot – Wifi
  43. 43. FM + RDS in mobile devices GSM Phones © HTC 45
  44. 44. Other Potential Projects • Live CD: • Support more standards: FM/RDS, ATSC/MH, … • Update tu recent Ubuntu releases (LTS) • Openmokast: Bcast chipsets into open phones • Openmokast: Port to Android • New broadcast apps • Royalty-free codecs: audio, video (CELT, Theora) • OpenBTS as return link • Broadcast apps in “App Stores” • Micro-broadcasting: events,… • Field trial: 3G radio reception • …?
  45. 45. Internet Radio Apps for iPhone © Apple, iTunes Store 47
  46. 46. Internet Radio Standardisation - Central listings of radio stations - Detailed stations info + more... - CE devices and others - Managed vs unmanaged - Free vs licensed FM Radio Unique internet link Internet radio unmanaged, free Internet radio + DAB + FM + ... Managed, licensed 48
  47. 47. Conclusions Broadcasting = One-to-many Telecom Business models for broadcasting still evolving Open & RF & Software and Generic HW = democratisation = rapid innovation cycles, adoption, QoL Other platforms coming: Internet, 3G, LTE, Wimax,... Identified potential R&D projects 49
  48. 48. Merci ! PROJECTS openmokast.org mmbtools.crc.ca www.crc.ca/mmb http://www.youtube.com/crcmmb http://www.slideshare.net/tag/crcmmb BLOG Broadcasting20.org, Twitter: @fralef francois.lefebvre@crc.ca

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