Broadcasting Technologies Overview April 2008


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An overview of the Broadcasting Technologies being investigated at the Communications Research Centre (CRC) in Canada

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  • Broadcasting Technologies Overview April 2008

    1. 1. Future Broadcasting Technologies: A view from Canada Communications Research Centre Bernard Caron, Vice-President, Broadcast Technologies Research Communications Research Centre Canada An Agency of Industry Canada Centre de recherches sur les communications Canada Un organisme d’Industrie Canada
    2. 2. Broadcasting Technologies at CRC <ul><li>CRC is the primary technical centre of excellence in broadcasting technologies in Canada, and the only organization with a R&D program and unique facilities dedicated to Broadcasting. </li></ul><ul><li>CRC provides supports for Spectrum Management to the Canadian Department of Industry. </li></ul><ul><li>CRC works with Private Industry and other Research organizations through collaborations, Service Contracts and IP licencing in Canada and around the world </li></ul>
    3. 3. Challenges to Over-the-Air Broadcasting <ul><li>Hundreds channels cable, satellite, IPTV… </li></ul><ul><li>Internet Radio/TV: Universal Access </li></ul><ul><li>Mobile TV on Telecom networks </li></ul><ul><li>Wireless Internet Access: Wi-Fi, Wi-Max… </li></ul><ul><li>Multi-function Handheld devices </li></ul><ul><li>Personal Audio-Video Recorders </li></ul><ul><li>Users generated contents </li></ul><ul><li>Sharing of Broadcast Spectrum </li></ul><ul><li>Changing regulations </li></ul><ul><li>Fast evolution of technologies </li></ul><ul><li>... you ain’t seen nothing yet </li></ul>
    4. 4. A vision of the evolution of Broadcasting <ul><li>“ Anything, anytime, anywhere…” </li></ul><ul><li>Choice </li></ul><ul><li>Mobility </li></ul><ul><li>Interactivity </li></ul><ul><li>Platform independence </li></ul><ul><li>Better quality - HDTV </li></ul><ul><li>More realism- 3D TV </li></ul>
    5. 5. How is CRC helping you to get there: <ul><li>Mobile broadcasting </li></ul><ul><li>Improving Coverage </li></ul><ul><li>Sharing the Broadcast Band </li></ul><ul><li>3D TV </li></ul>
    6. 6. Mobile Broadcasting <ul><li>Various distribution technologies </li></ul><ul><ul><li>3G wireless networks -- DVB-H </li></ul></ul><ul><ul><li>ATSC H/M -- DMB </li></ul></ul><ul><ul><li>Qualcom/MediaFlo -- Wi-Fi/WiMax </li></ul></ul><ul><li>Broadcasters advantages </li></ul><ul><ul><li>Spectrum availability </li></ul></ul><ul><ul><li>Transmission facilities </li></ul></ul><ul><ul><li>Dual Transmission Mode: Mobile-Fixed (ATSC-H/M DVB-T/H) </li></ul></ul><ul><ul><li>Own Content </li></ul></ul>
    7. 7. Mobile Broadcasting at CRC <ul><li>Laboratory and Field tests of proposed systems for ATSC H/M </li></ul><ul><li>Investigations on more efficient Audio/Video compression technologies </li></ul><ul><ul><li>Wavelet-based codec (CRC-CWT and CRC-WVC) </li></ul></ul><ul><ul><li>Frame rate conversion (CRC-FRC) </li></ul></ul><ul><ul><li>Multi-frame motion estimation </li></ul></ul><ul><ul><li>Bio-inspired audio coding algorithms </li></ul></ul><ul><ul><li>Contributions to the Video Quality Experts Group (VQEG) for Multimedia applications. </li></ul></ul><ul><li>Subjective audio/video evaluations </li></ul><ul><li>Investigations on Multimedia Broadcasting using DAB-DMB technologies in the VHF-UHF Band </li></ul><ul><li>Video over Wi-Fi and WiMax </li></ul><ul><li>DVB-H and Satellite Trial </li></ul><ul><li>Experimental Mobile Multimedia Broadcasting system under evaluation in Montréal. </li></ul>
    8. 8. Need for Improved Broadcasting Coverage <ul><li>Mobile-Handheld reception </li></ul><ul><li>Portable reception </li></ul><ul><li>Indoor antenna </li></ul><ul><li>Replication of Analog Reception area </li></ul>
    9. 9. CRC Improv ing Coverage <ul><li>Distributed transmitters networks (DTN) </li></ul><ul><ul><li>A number of low-power transmitters replace one centrally located high-power station </li></ul></ul><ul><ul><li>Coverage can be shaped to reach only populated areas </li></ul></ul><ul><ul><li>Potential for reduced construction and operating costs as well as spectrum saving </li></ul></ul><ul><ul><li>Needs for new tower sites may be problematic </li></ul></ul><ul><li>Investigations on adaptive and directional antenna performance. </li></ul><ul><li>Coverage Prediction: CRC-COVLAB </li></ul><ul><ul><li>Can be used with Distributed Transmitters networks </li></ul></ul><ul><ul><li>See a demo for ATSC H/M at the DTV HOT SPOT </li></ul></ul><ul><ul><li>Try it free on-line at l </li></ul></ul>
    10. 10. Improvements to ATSC DTV Coverage : Prediction of SFN Coverage Example of CRC-COVLAB prediction for Mobile/Fixed Fixed Mobile
    11. 11. Learning to Share the Broadcast Band <ul><li>Digital dividend after the end of analog transmissions </li></ul><ul><li>Various systems could share the Broadcast spectrum: </li></ul><ul><ul><li>Public Safety Mobile Communication </li></ul></ul><ul><ul><li>IEEE 802.22 Wireless Regional Area Networks (Unlicenced Devices) </li></ul></ul><ul><ul><li>MediaFlo, DVB-H, DMB </li></ul></ul><ul><ul><li>‘’ Wi-Fi’’ in the Broadcast Band </li></ul></ul><ul><ul><li>FM-IBOC, Digital Radio Mondiale </li></ul></ul>
    12. 12. Sharing the Broadcast Band at CRC <ul><li>Assessment of the impact of new communication systems in the Broadcast band: </li></ul><ul><ul><li>Public Safety mobile transmission system on DTV </li></ul></ul><ul><ul><li>IEEE 802.22 Wireless Regional Area Networks (Unlicenced Devices) on DTV </li></ul></ul><ul><ul><li>Engineering studies for Industry Canada on the impact of new technologies such as IBOC, T-DMB, DVB-H, MediaFlo on spectrum management </li></ul></ul><ul><li>Assessment of IBOC interference in the FM band </li></ul><ul><li>Investigation on DRB and Wi-Fi operation in the UHF band </li></ul>200 kHz 1 st upper adjacent analog channel 1 st lower adjacent analog channel
    13. 13. 3-D Video <ul><li>Popularity of 3-D Cinema </li></ul><ul><li>Future Upgrade to HDTV </li></ul><ul><li>Availability of 3-D Display (Without glasses) </li></ul><ul><li>Small overhead in term of data rate </li></ul><ul><li>Better understanding of the 3-D production problems </li></ul>
    14. 14. 3-D Video at CRC <ul><li>Investigation on compression technologies for 3-D video </li></ul><ul><li>Subjective evaluation of 3-D </li></ul><ul><li>Conversion of 2-D video </li></ul><ul><li>programs to 3-D </li></ul>
    15. 15. Software DAB- DMB system s at CRC: Multiplex, Modulators, Channel Simulator and Receivers
    16. 16. The Broadcasting Systems of T omor r ow <ul><li>Large Local Area </li></ul><ul><li>Wireless </li></ul><ul><li>Broadband </li></ul><ul><li>Mobile </li></ul><ul><li>Flexible: Audio, Mobile TV, HDTV, 3-D </li></ul><ul><li>Integrated with other telecommunication systems </li></ul><ul><li>Ideal for mass distribution of </li></ul><ul><li>multimedia content. </li></ul><ul><li>An example: Emergency Broadcasting </li></ul>
    17. 17. Conclusions <ul><li>OTA Broadcasting continue to evolve and to play a major role. </li></ul><ul><li>Radio and Television will be one part of an interactive immersive multimedia experience . </li></ul><ul><li>Contents will be available through various media and displayed on a variety of devices. </li></ul><ul><ul><ul><li>Ultimate goal is to get anything, anytime, anywhere … </li></ul></ul></ul><ul><ul><ul><li>But each application will find its ways </li></ul></ul></ul><ul><ul><ul><li>CRC-Broadcasting is helping Industry-Canada, the Canadian industry and our international partners to move toward an harmonious transition to a digital and converged world. </li></ul></ul></ul>
    18. 18. Expected Achievement Thank you Communications Research Centre Bernard Caron, Vice-President Broadcast Technologies Research 613-998-2869,
    19. 19. An example of integration Placeshifting Cable TV IPTV Satellite WI-FI Internet Cellular TV Transmitters Distribution Rights Production Distribution Viewers
    20. 21. Improvements to ATSC DTV Coverage : Prediction of Single Transmitter Coverage Example of CRC-COVLAB prediction for Mobile/Fixed Fixed Mobile Coverage Prediction of Hypothetical ATSC – M/H Single Frequency Network in Los Angeles Fixed Mobile