Future of the broadcasting spectrum
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An overview of the future of the Broadcast spectrum and of new Broadcasting applications.
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Future of the broadcasting spectrum
- 1. Technologies and the Future of the Broadcast Spectrum Communications Research Centre Bernard Caron, Vice-President, Broadcast Technologies Research Warning: The views presented are those of the author only.
- 8. Possible Distributed Transmitters Network: TV Ontario
- 11. Improvements to ATSC DTV Coverage : Prediction of SFN Coverage Example of CRC-COVLAB prediction for Mobile/Fixed Fixed Mobile
- 21. Viewers Production An example of integration Distribution Place shifting Distribution Rights Cable TV IPTV Broadcast transmitters Satellite WI-FI Internet Cellular
- 25. Expected Achievement Thank you Communications Research Centre Bernard Caron, Vice-President Broadcast Technologies Research 613-998-2869, bernard.caron@crc.ca www.crc.ca
Hinweis der Redaktion
- Los Angeles existing DTV station KMEX-TV, ch. 35, was selected. Tx2 and Tx3 are hypothetical. Transmitter parameters: KMEX-TV: 400 kW ERP, 98 m AGL, dir antenna pointing South-West ° Tx2: 10 kW ERP, 50 m AGL, dir antenna pointing West Tx3: 5 kW ERP, 50 m AGL, dir antenna pointing North-East Receiver parameters: Fixed: Field strength 41 dBuV/m, 90% service availability, antenna height 10 m Mobile: C/N+I = 15 dB, 90% service availability, antenna height 1.5 m Path Loss: CRC-PREDICT v3.21, elevation and Land cover data using Computamaps (500 m resolution) Echo cancelation: The equalizer values used for echo cancelation were -10 to 45 usec and 3 dB C/N+I diff., these values may need to be reviewed and would consequently affect the coverage slightly. Low power transmitter, combined with directional antennas and the terrain elevation (mountains) were used to limit self-interference. Addition of gap filler or coverage extender in the SFN needs to be done carefully, it is easy to cause self-interference, need for advance simulation tool for planning.
- Red : Completed Orange: LPTV underway Yellow: In progress Green: not started