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Digital Terrestrial Networks

Digital Terrestrial Networks. Presentation Outline Sentech Experience in Digital Terrestrial The Future of Terrestrial Broadcasting is Digital Digital Terrestrial Television (DTT) as Stimulus for Growth Features. TERRESTRIAL BROADCASTING. Digital Terrestrial Television.

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Digital Terrestrial Networks

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  1. Digital Terrestrial Networks Presentation Outline • Sentech Experience in Digital Terrestrial • The Future of Terrestrial Broadcasting is Digital • Digital Terrestrial Television (DTT) as Stimulus for Growth • Features

  2. TERRESTRIAL BROADCASTING

  3. Digital Terrestrial Television Sentech Experience in Digital Terrestrial Digital Radio (DAB) • On air since 1997 • 7 Services on 1 Transmitter • Coverage over Pretoria & Johannesburg ( 18% population coverage) • Single Frequency Network established in 2001 Digital Terrestrial Television (DTT) • On air since 2000 • Mobile and Portable trials • 5 Services on 1 Transmitter • Coverage over Johannesburg ( 12% population coverage)

  4. Digital Terrestrial Television The Future of Terrestrial Broadcasting is Digital • Global trend to Digital (Internet, GSM, etc) • Telecommunication has already gone digital • Satellite Broadcasting has migrated to digital • Digital Radio (DAB) and Television (DTT) Networks are rolling out world-wide • Growing market demand for more choice, quality, flexibility, mobility and interactivity • Analogue Networks cannot deliver

  5. Digital Terrestrial Networks DTT as Stimulus for Growth • DTT creates capacity for more services through efficient use of spectrum • DTT acts as stimulus to creative talent in content and service sectors • Allows new services to launch at lower transmission costs • DTT launch will stimulate local receiver manufacturing and distribution sectors

  6. Digital Terrestrial Television Features • Spectrum Efficiency • Multi-channel Capability • Immunity to Disturbance • Portable & Mobile TV • Enhanced services (such as Electronic Programme Guide) • Lower Power Operation

  7. Digital Terrestrial Television Networks Features • Spectrum Efficiency • Spectrum a finite national resource • Digital makes far more efficient use of the available spectrum • Allows for expansion and new services

  8. Digital Terrestrial Television ANALOGUE DIGITAL

  9. Analogue TV • 8 MHz Spectrum • One Service • New Frequency per site Digital Terrestrial TV • 8 MHz Spectrum • 6 or more Services • Same frequency re-used in Single Frequency Networks Digital Terrestrial Television ANALOGUE DIGITAL

  10. Digital Terrestrial Television Features • Spectrum Efficiency • Multi-channel Capability • Immunity to Disturbance • Portable & Mobile TV • Enhanced services (such as Electronic Programme Guide) • Lower Power Operation

  11. TERRESTRIAL BROADCASTING

  12. Digital Terrestrial Television Features • Spectrum Efficiency • Multi-channel Capability • Immunity to Disturbance • Portable & Mobile TV • Enhanced services (such as Electronic Programme Guide) • Lower Power Operation

  13. Digital Terrestrial Television Features - Immunity to Disturbance ANALOGUE DIGITAL • Received signal quality affected by environment • Excellent signal quality • Robust reception • Basic low-cost antenna

  14. Digital Terrestrial Television Features • Spectrum Efficiency • Multi-channel Capability • Immunity to Disturbance • Portable & Mobile TV • Enhanced services (such as Electronic Programme Guide) • Lower Power Operation

  15. Digital Terrestrial Television Features - Portable & Mobile TV ANALOGUE(Mobile) DIGITAL (Mobile) • Received signal quality affected by environment • Excellent signal quality • Robust reception

  16. Digital Terrestrial Television Features • Spectrum Efficiency • Multi-channel Capability • Immunity to Disturbance • Portable & Mobile TV • Enhanced services (such as Electronic Programme Guide) • Lower Power Operation

  17. Digital Terrestrial Television Or?

  18. Digital Terrestrial Television Features • Spectrum Efficiency • Multi-channel Capability • Immunity to Disturbance • Portable & Mobile TV • Enhanced services (such as Electronic Programme Guide) • Lower Power Operation

  19. Digital Terrestrial Television Features - Lower Power Operation ANALOGUE DIGITAL • UHF DTT Transmitter at Sentech Tower • 2 kW • Equivalent coverage at 10% of Power • UHF Analogue TV Transmitter at Sentech Tower • 20 kW

  20. Digital Terrestrial TV Networks Features - Lower Power Operation DTT AT 2 kW ANALOGUE TV AT 20 kW

  21. Thank you for your attention

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