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Different Technologies and Delivery Systems of Digital TV and Radio broadcasting
Mohsen GHOMMAM MALEK( Chief Engineer, Office National de Telediffusion ONT, Tunisia)
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SUMMARY
1. Intoduction
2. Image formats & definitions
3. Broadcasting compression norms
4. Different delivery solutions for TV broadcasting
5. Different delivery solutions for Radio broadcasting
6. Conclusion
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INTRODUCTION
� There are many standards for image, compression,
delivery systems, etc..
� Most Next generations of digital TV standards are
completed and can be launched in the future
� Let’s discover together the existing systems and the new
ones and their applications
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2-IMAGE FORMATS & DEFINITIONS (1)
�Profiles HDTV, SDTV and Mobile TV (pixels/lines)
Typ. 320x240
720x(480/576) (4/3)
1280x720 (16/9)
SDTVHandset (LDTV) HDTV 720p HDTV 1080p/1080i
1920x1080 (16/9)
Vehicular
PMP
Compared to Standard TV (SDTV)
� 4 times less bandwidth is required to display a TV image on a handset (LDTV)
� 3 to 6 times more bandwidth is required to display a High Definition image
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3-BROADCASTING COMPRESSION NORMS
�MPEG2 used mainly in SDTV
�MPEG4 AVC can used for Mobile TV, standard TV and
mainly HDTV: 50% of compression gain compared to MPEG2
� Don’t forget MPEG4 SVC: enhancement of MPEG4 AVC
and compatible with it (under study)
�Data rate needed and planned for different formats
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3-BROADCASTING COMPRESSION NORMS
� Names of MPEG4 AVC /H264 ( History)
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3-BROADCASTING COMPRESSION NORMS
� Licence Fees for MPEG-4-AVC
� In 2003, MPEG-LA announced participation fees for over-the-air free to air broadcasts using MPEG-4 AVC:
�No royalties for markets of 100,000 or fewer households�For markets of greater than 100,000 households, $10,000 per year per local market service.
� BUT In 2008, there are two options for free to air broadcasters:
�one payment of $2,500 per encoder�Payment of $10,000 each year for any number of encoders per legal entity.
The less expensive option depends on the way the individual broadcaster operates
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4-Different delivery solutions for TV broadcasting
� The main delivery solutions for TV broadcasting:
•Terrestrial•Satellite•Cable•IPTV•Mobile TV
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4-1-Terrestrial TV broadcasting (1)
� The main digital standards are :• ATSC ( North America)• ISDB-T (Japan, Brazil)• DMB-T/H ( China)• DVB-T ( Europe)
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Japan Japan
Réception Mobile: Yes
USUSUS
移動体受信移動体受信移動体受信移動体受信
6 MHz
OFDM
6 MHz
8-VSB
7/8 MHz
EuropeEuropeEurope
Reception Mobile: Yes Non considered
QPSK-16QAM- 64QAM
1405 / 5617 1705 / 6817 1Number of carriers
8-VSB: Bande latérale résiduelle 8 états
(ISDB-T) (DVB-T) (ATSC)
OFDM QPSK-16QAM- 64QAM
•ISDB-T : Diffusion numérique service intégré-terrestre
4-1-Terrestrial TV broadcasting (2)
� Comparison between main systems :
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SFN MFN
4-1-Terrestrial TV broadcasting (3)
� Main parameters of DVB-T :
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4-1-Terrestrial TV broadcasting (4)
� Reception modes :
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4-1-Terrestrial TV broadcasting (5)
� Planning configurations/ Coverage :
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� The new generation DVB-T2 digital standard:
4-1-Terrestrial TV broadcasting (6)
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Cases 1 2 3
� DVB-T2 offers higher data rates than DVB-T at a given C/N:
4-1-Terrestrial TV broadcasting (7)
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4-2-Satellite TV broadcasting (1)
� The main digital TV standards are:• DVB-S using QPSK modulation (DTH)•2nd generation DVB-S2
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� Features of DVB-S2:
4-2-Satellite TV broadcasting (2)
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� DVB-S2: New modulation schemes:
4-2-Satellite TV broadcasting (3)
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4-3-Cable TV broadcasting
� The main digital cable TV standards are:• DVB-C•2nd generation DVB-C2
� Main features of DVB-C2 and the comparison with DVB-C
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4-4-IPTV broadcasting (1)
�What’s IPTV? Comparison with WebTV
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•IPTV ARCHITECTURE•PROPRIEATARY SOLUTIONS
4-4-IPTV broadcasting (2)
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4-4-IPTV broadcasting (3)
� Comparison of IPTV over DSL with DVB-S and DVB-C
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� What do we mean by Mobile TV?
� Handheld devicesmobile phone
� Portable devices with small antenna
� In-car equipment
4-5-MOBILE TV broadcasting (1)
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� Unicast/Broadcast solutions
Mobile NetworkMobile NetworkMobile Network
Broadcast Network
Multimedia services to masses andcommunities
User-controlledpersonalized channelsand interactivity
Mobile TV content to masses, > 20 channels
Broadcast, DVB-H Unicast MBMS
Mobile NetworkMobile NetworkMobile Network
Broadcast Network
Multimedia services to masses andcommunities
User-controlledpersonalized channelsand interactivity
Mobile TV content to masses, > 20 channels
Broadcast, (DVB-H) Unicast MBMS
4-5-MOBILE TV broadcasting (2)
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Mobile TV Solutions
T- DMB MediaFLO DVB-H DVB-SH/STiMi/S-DMB
Terrestrial – Digital Multimedia
Broadcasting
‘Media Forward Link Only’
Digital Video Broadcast to the
Handset’
Hybrid Satellite/Terrestrial
Solution
Terrestrial Satellite
Transmitter
3G Network Repeater
Terrestrial Transmitter
FLO Transmitter Digital Terrestrial TV Transmitter
Satellite (with Gap fillers)
Data Rate 384 Kbps 1.4 Mbps 11 Mbps 11 Mbps 27 Mbps
Frequency
BTX 2110 - 2170 MHz
MTX 1920 - 1980 MHz
VHF/L-BAND US 700 MHz band
UHF Band from 470 to 890 MHz
S-Band (2.630~2.655 GHz)/
(2.170-2.200 Ghz)
Coverage(1Tx)
Trialed
Commercial Partially
Primary Use Worldwide Korea/Europe US Europe Korea/Japan/China/Europe/North America
Up to 2Km
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22-40 Km
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Up to 25Km
BroadcastBroadcastStreamingStreaming3G-MBMS
Digital Video Streaming on 3G
Up to 25Km Up to 50Km
Mobile TV Solutions
T- DMB MediaFLO DVB-H DVB-SH/STiMi/S-DMB
Terrestrial – Digital Multimedia
Broadcasting
‘Media Forward Link Only’
Digital Video Broadcast to the
Handset’
Hybrid Satellite/Terrestrial
Solution
Terrestrial Satellite
Transmitter
3G Network Repeater
Terrestrial Transmitter
FLO Transmitter Digital Terrestrial TV Transmitter
Satellite (with Gap fillers)
Data Rate 384 Kbps 1.4 Mbps 11 Mbps 11 Mbps 27 Mbps
Frequency
BTX 2110 - 2170 MHz
MTX 1920 - 1980 MHz
VHF/L-BAND US 700 MHz band
UHF Band from 470 to 890 MHz
S-Band (2.630~2.655 GHz)/
(2.170-2.200 Ghz)
Coverage(1Tx)
Trialed
Commercial Partially
Primary Use Worldwide Korea/Europe US Europe Korea/Japan/China/Europe/North America
Mobile TV Solutions
T- DMB MediaFLO DVB-H DVB-SH/STiMi/S-DMB
Terrestrial – Digital Multimedia
Broadcasting
‘Media Forward Link Only’
Digital Video Broadcast to the
Handset’
Hybrid Satellite/Terrestrial
Solution
Terrestrial Satellite
Transmitter
3G Network Repeater
Terrestrial Transmitter
FLO Transmitter Digital Terrestrial TV Transmitter
Satellite (with Gap fillers)
Data Rate 384 Kbps 1.4 Mbps 11 Mbps 11 Mbps 27 Mbps
Frequency
BTX 2110 - 2170 MHz
MTX 1920 - 1980 MHz
VHF/L-BAND US 700 MHz band
UHF Band from 470 to 890 MHz
S-Band (2.630~2.655 GHz)/
(2.170-2.200 Ghz)
Coverage(1Tx)
Trialed
Commercial Partially
Primary Use Worldwide Korea/Europe US Europe Korea/Japan/China/Europe/North America
Up to 2Km
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22-40 Km
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Up to 25Km
BroadcastBroadcastStreamingStreaming3G-MBMS
Digital Video Streaming on 3G
Up to 25Km Up to 50Km
� Delivery solutions - Comparaison
4-5-MOBILE TV broadcasting (3)
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ISDB-T/CMMB commercial launch
DMB commercial launch
MediaFLO commercial launch
DVB-H trial service
DVB-H commercial launch
DVB-H commercial launch scheduled for next 12 months
DMB commercial launch scheduled
Source: Arthur D. Little, 2009
ISDB-T/CMMB commercial launch
DMB commercial launch
MediaFLO commercial launch
DVB-H trial service
DVB-H commercial launch
DVB-H commercial launch scheduled for next 12 months
DMB commercial launch scheduled
Source: Arthur D. Little, 2009
� Global Status
4-5-MOBILE TV broadcasting (4)
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5-Different delivery solutions forRadio broadcasting (1)
ANALOGUE SYSTEMS
DIGITAL SYSTEMS
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5-Different delivery solutions forRadio broadcasting (2)
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5-Different delivery solutions forRadio broadcasting (3)
� Main Digital radio families
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5-Different delivery solutions forRadio broadcasting (4)
�Digital radio multimedia features
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5-Different delivery solutions forRadio broadcasting (4)
� DAB/DAB+/T-DMB in Europe
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� Receiver profiles for Eureka 147
5-Different delivery solutions forRadio broadcasting (4)
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6-CONCLUSION (1)
•Everyone does not introduce new systems at the same time! There will inevitably be wide timescale difference, both for production and delivery
• New digital technology appears in ‘generations’, and there will always be a ‘next generation’ ahead. There will never be a ‘best forever’ system
• Digital Switchover: The transition to digital broadcasting should take place in the next years.
• IT programme production is inevitable
• High Definition Television: In five years, the only TV programme production equipment on the market may be HDTV.
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• Internet TV via broadband may have as many viewers/users as broadcasting. Internet is becoming a ‘video based’ medium
• IPTV services, Broadcasting to handhelds, are usually based on subscription and/or pay service models. They all need programmes/content that people are willing to pay for. There are ‘substitutes’ available such as Pod casting. Their success is not certain but possible.
• Try to choose a standard as close as you can to the service date.
6-CONCLUSION (2)
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Thank you for listening.Thank you for listening.
MerciMerci pour pour votrevotre attention.attention.
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