digital terrestrial networks presentation outline sentech experience in digital terrestrialsentech...

Digital Terrestrial Digital Terrestrial NetworksNetworks

Presentation OutlinePresentation Outline

• Sentech Experience in Digital TerrestrialSentech Experience in Digital Terrestrial

• The Future of Terrestrial Broadcasting is The Future of Terrestrial Broadcasting is Digital Digital

• Digital Terrestrial Television (DTT) as Digital Terrestrial Television (DTT) as Stimulus for GrowthStimulus for Growth

• FeaturesFeatures

TERRESTRIAL BROADCASTING

Digital Terrestrial Television Digital Terrestrial Television Sentech Experience in Digital TerrestrialSentech Experience in Digital Terrestrial

Digital Radio (DAB)Digital Radio (DAB)

– On air since 1997On air since 1997

– 7 Services on 1 Transmitter7 Services on 1 Transmitter

– Coverage over Pretoria & Johannesburg (Coverage over Pretoria & Johannesburg ( 18% population 18% population coverage) coverage)

– Single Frequency Network established in 2001Single Frequency Network established in 2001

Digital Terrestrial Television (DTT)Digital Terrestrial Television (DTT)

– On air since 2000On air since 2000

– Mobile and Portable trialsMobile and Portable trials

– 5 Services on 1 Transmitter5 Services on 1 Transmitter

– Coverage over Johannesburg (Coverage over Johannesburg ( 12% population coverage) 12% population coverage)

Digital Terrestrial TelevisionDigital Terrestrial Television

The Future of Terrestrial Broadcasting is The Future of Terrestrial Broadcasting is DigitalDigital

• Global trend to Digital (Internet, GSM, etc)Global trend to Digital (Internet, GSM, etc)

• Telecommunication has already gone digitalTelecommunication has already gone digital

• Satellite Broadcasting has migrated to digitalSatellite Broadcasting has migrated to digital

• Digital Radio (DAB) and Television (DTT) Networks Digital Radio (DAB) and Television (DTT) Networks are rolling out world-wideare rolling out world-wide

• Growing market demand for more choice, quality, Growing market demand for more choice, quality, flexibility, mobility and interactivity flexibility, mobility and interactivity

• Analogue Networks cannot deliverAnalogue Networks cannot deliver

Digital Terrestrial Digital Terrestrial NetworksNetworks

DTT as Stimulus for Growth DTT as Stimulus for Growth

• DTT creates capacity for more services through DTT creates capacity for more services through efficient use of spectrumefficient use of spectrum

• DTT acts as stimulus to creative talent in content DTT acts as stimulus to creative talent in content and service sectors and service sectors

• Allows new services to launch at lower Allows new services to launch at lower transmission coststransmission costs

• DTT launch will stimulate local receiver DTT launch will stimulate local receiver manufacturing and distribution sectorsmanufacturing and distribution sectors

Digital Terrestrial TelevisionDigital Terrestrial TelevisionFeaturesFeatures

• Spectrum EfficiencySpectrum Efficiency

• Multi-channel CapabilityMulti-channel Capability

• Immunity to DisturbanceImmunity to Disturbance

• Portable & Mobile TVPortable & Mobile TV

• Enhanced services (such as Enhanced services (such as Electronic Programme Electronic Programme Guide) Guide)

• Lower Power OperationLower Power Operation

Digital Terrestrial TelevisionDigital Terrestrial Television NetworksNetworks

FeaturesFeatures


– Spectrum a finite national Spectrum a finite national resourceresource

– Digital makes far more Digital makes far more efficient use of the available efficient use of the available spectrumspectrum

– Allows for expansion and Allows for expansion and new servicesnew services

ANALOGUE ANALOGUE DIGITALDIGITAL


Analogue TV Analogue TV

• 8 MHz Spectrum8 MHz Spectrum

• One ServiceOne Service

• New Frequency per siteNew Frequency per site

Digital Terrestrial TV Digital Terrestrial TV

• 8 MHz Spectrum8 MHz Spectrum

• 6 or more Services6 or more Services

• Same frequency re-used in Same frequency re-used in Single Frequency Networks Single Frequency Networks

ANALOGUEANALOGUE DIGITALDIGITAL


TERRESTRIAL BROADCASTING


• Received signal quality Received signal quality affected by environmentaffected by environment

• Excellent signal qualityExcellent signal quality• Robust receptionRobust reception• Basic low-cost antennaBasic low-cost antenna

ANALOGUEANALOGUE DIGITALDIGITALFeatures Features - Immunity to Disturbance - Immunity to Disturbance


• Received signal quality Received signal quality affected by environmentaffected by environment

• Excellent signal qualityExcellent signal quality

• Robust receptionRobust reception

ANALOGUEANALOGUE (Mobile)(Mobile) DIGITAL DIGITAL (Mobile)(Mobile)

Features Features - Portable & Mobile TV - Portable & Mobile TV






• Enhanced services (such as Enhanced services (such as Electronic Programme Electronic Programme Guide)Guide)


Or?



• UHF Analogue TV UHF Analogue TV Transmitter at Sentech Transmitter at Sentech TowerTower

• 20 kW20 kW

• UHF DTT Transmitter at UHF DTT Transmitter at Sentech Tower Sentech Tower

• 2 kW 2 kW

• Equivalent coverage at 10% Equivalent coverage at 10% of Power of Power

ANALOGUEANALOGUE DIGITALDIGITAL

Features Features - Lower Power Operation - Lower Power Operation

Digital TerrestrialDigital Terrestrial TV TV NetworksNetworks

ANALOGUE TV AT 20 kWANALOGUE TV AT 20 kW

DTT AT 2 kWDTT AT 2 kW

Features Features - Lower Power Operation - Lower Power Operation

Thank you for Thank you for your attentionyour attention

digital terrestrial networks presentation outline sentech experience in digital terrestrialsentech...

Documents

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digital internet

digital satellite broadcasting

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disturbance slide

digital global trend