Comparison of DVB-T2 with 1st Generation

DTT Solutions

Dr. Peter SiebertDVB Project Office

Geneva/Switzerland

Introduction to DVB

DVB started in Europe in 1993 – but 100 of its 230 Members are from non-European companies

DVB’s members are drawn from:BroadcastersNetwork operatorsManufacturersRegulators

There are more than 100 DVB standards

DVB‘s purpose is to create and to promote video broadcast standards

DVB: The market leader in digital TV

Screen DigestTM study reported that“DVB is the most widely used transmission standard in the

world“

Where we are

DVB-S/S2 is the standard for Direct-to-Home worldwide

DVB-C is deployed widely

DTT Standards World Map

DTT Beauty Contest

What is beauty

Relevant Criteria for DTT Standard Comparison

Efficiency (Capacity vs. Robustness) Capacity (how much can I transmit)Robustness (Cost of transmit network) Single Frequency Networks (SFN)

CostPrivate Sector receive equipment (STB, iDTV) Broadcaster Capital Expenditure (CAPEX)Broadcaster Operational Expenditure (OPEX)

FunctionalityEWSMobile TVPay TVInteractivityLocal Content

Efficiency

Efficiency

Data rates and C/N for DVB-T2 (6 MHz channel)

Efficiency: Single Frequency Network (SFN)

Large Guard Intervall: up to 160 km for one SFN cell

32 k FFT: Efficient use of guard intervall

How to benefit from improved efficieny

Higher data rate per channelMore programsHDTV qualityLess spectrum required (to be used for other services)

Improved robustnessLower cost for building the transmit network (CAPEX)Lower cost for operating the network (OPEX)Easier reception (indoor antennas)

Cost

Cost: Private Sector Receive Equipment (STB, iDTV)

Prices of consumer equipment are determined by economy of scale and competitionDVB technology with 70% world wide market share is available at very low pricesTest: Check STB prices on Ali Baba for T2

Cost: Receive Chip Sets (Sony) Second Generation

Cost: Receive Chip Sets (Broadcom) Single Chip SoC

Cost: Receive Chip Sets (ST) Single Chip SoC

Cost: Broadcaster Operational Expenditure (CAPEX)

DVB-T2 allows for improved robustness

Less transmitter needed Lower transmit power

DVB-T2 supports Peak to Average Power Reduction (PAPR) mechanisms

Significant savings in network cost

53

DVB-T2: FFT 32K GI 1/16 (299 ms) 256QAM 3/4 (31.01 Mbps) C/N = 20.3 dB (+ 1.0 dB)DVB-T2: FFT 32K GI 1/16 (299 ms) 256QAM 2/3 (27.57 Mbps) C/N = 18.1 dB (- 1.2 dB)DVB-T2: FFT 32K GI 1/16 (299 ms) 16QAM 2/3 (13.79 Mbps) C/N = 9.1 dB (-10.2 dB)DVB-T2: FFT 32K GI 1/16 (299 ms) 16QAM 3/4 (15.51 Mbps) C/N = 10.4 dB (-8.9 dB)

Reference Mode

Same Coverage mode

Same Payload Mode

ISDB-T: FFT 8K GI 1/4 (252 ms) 64QAM 2/3 (14.60 Mbps) C/N = 19.3 dB ( 0.0 dB)

(+ 90%)

(+ 110%)

(+10db)

(+ 9db)

Cost: Power Savings with DVB-T2

Cost: Broadcaster Operational Expenditure (OPEX)

Satellite to be used for distribution to transmit towersTransmission is done with DVB-S2Improved robustness allows for less transmitters and/or lower power

Reduced cost for electricity (or diesel)

Synergie in Service Information between satellite and cable

Metadata to be produced only once

Features

Emergency Warning System (EWS)

Yes, we can!Based on DVB SI receive devices can display a message and or be switched remotely to a EWS channelUSA and Japan are the only two countries with a broadcast EWS solution

MPLP Demo at Broadcast Asia, June 2011

Time 825

Speed: 134.3km/h

Mobile TV: DVB-T2 Reception on German Autobahn

T2, T2-Lite and NGH

DVB-T2 covers fixed as well as mobile use casesDVB-T2-Lite is basically a subset of T2 to support mobile for terrestrial broadcasters

Ideal solution for a broadcast network to start mobile servicesWill be supported in DVB-T2 chipsetsFEF-TDM structure allows total flexibilty

Broadcast for fixed and mobile in one channelNGH is the ultimate air interface for all types of mobile broadcast

Can be combined with T2Highest efficiency and operational flexibility

T2

T2-Lite

NGH

DVB 2nd generation Conditional Access System

DVB-CSA3 provides the necessary security for high value content (128 bit key length). About 50% of DVB devices are for Pay-TV

Interactivity

DVB supports several interactive solutions:DVB MHP/GEMHbbTVMHEG

Wide range of choices for operators of satellite, cable and terrestrial broadcast networks

Relevant Criteria for DTT Standard Selection

Efficiency (Capacity vs. Robustness) Capacity (how much can I transmit)Robustness (Cost of transmit network) Single Frequency Networks (SFN)

CostPrivate Sector receive equipment (STB, iDTV) Broadcaster Capital Expenditure (CAPEX)Broadcaster Operational Expenditure (OPEX)

FunctionalityEWSMobile TVPay TVInteractivityLocal Content

Demonstration

Demo Parameter

T2/T2-Lite USB Stick Prototype

Promoting Digital TV Broadcasting Worldwide

Membership 2013

Membership Opportunities

Information: learn the latest news on DTT worldwide

Network Implementation: meet the DTT Industry – broadcasters, regulators, manufacturers and network operators

Cooperation: work with industry organisations to co-ordinate common positions and recommendations related to DTT services

Access: participate in DigiTAG events attended by national DTT decision makers

Marketing: opportunities to promote member business at events

For more information on membership please:

www.digitag.org

Contact DigiTAG Project Office:

Rosemary Smith – smith@digitag.org Nicole Frey – frey@ebu.ch

DigiTAG 2.0

Countries where DVB-T2 is deployed

AustriaBelgiumColombiaCroatiaDenmarkFinlandGhanaHaitiItalyKenyaKyrgyzstanMalawi

NamibiaNew ZealandNigeriaRussiaSaudi ArabiaSeychellesSurinameSwitzerlandThailandUgandaUnited KingdomVietnamZamibia

DVB’s main achievements

Second Generation Broadcasting Standards

Driver for 2nd generationAdditional capacity for HD and 3DImproved chip set technologyNew algorithmsNew business models

Features of 2nd generationClose to theoretical limitsCapacity and/or robustness increaseSupport of new delivery schemesOperational flexibility

Moore‘s law

Cramming more components onto integrated circuitsBy Gordon E. Moore1965

Spectral Efficiency

Source: Parrot (http://dvb.org/news_events/White_Papers/)

Regional Content: DVB-T2 Support regionalised services and SFN

Current activities in DVB:

Tomorrow‘s specification

What‘s in the pipeline

New versions of CI Plus including a new form factorNew satellite specificationsDVB adoption of new video coding schemeUHDTV and 3DTV

CI Plus Architecture

CI Plus Host

CI PlusModule

Tuner

CA Descram

bler

CI Scrambl

er

Do we still need STBs?

In Europe most TVs come with digital tuners

CI Plus terminates CA

Next version CI Plus will also terminate middle-ware

UK goes for IDTVs

Satellite again:

In 2004 we thought that the job is done. In the meantime:

RCS2 has been published

We have added a chapter on wideband transponders to facilitate satellite broadband receivers in Ka band

DVB has provided a new specification for interferer detection based on spread spectrum technology (Carrier ID)

There will be further extensions to the S2 specification increasing capacity by 20 – 30 % (DVB-Sx)

HEVC: The next Video Coding Standard

History of digital video coding standard• 1993: MPEG-2 (digital broadcast TV)• 2003: H.264 (IPTV, HDTV)• 2013: H.265 (OTT, UHDTV, 3DTV)Up to now every 10 years the performance has

doubled!

DVB will support H.265 for broadcast, IPTV and OTTDVB is also considering UHD and 3DTV based on

H.265/HEVC

Bandwidth requirements with H.264

Ultra High Definition Options

UHDTV and HEVC in DVB

DVB will define the parameters for a UHDTV Broadcast Profile based on HEVCWe have already agreed on 4K (UHD1)There are many other open issues:

Frame rateData rate requiredHow many bits per pixelDelivery schemes (cable, satellite, terrestrial, IPTV)New HDMI needed How to align with BluRay Disc?

3DTV in DVB

Phase 1: Frame compatible approach (done)Phase 2a: Service compatible (done)Phase 2b: Frame compatible – Compatible (started)

Phase 3 for 3DTV: „without glasses“ to be discussed in DVB (future work)

Conclusion

Broadcast TV will remain important for the big audienceTVs with digital tuner integrated and CI Plus support may make STBs obsoletNew satellite specifications are on the horizon to bei used mostly for contribution and Satellite News GatheringThe next video coding scheme will bring new services like e.g. UHDTV and improved 3DTV... and I have not mentioned

Interactive TVIPTVSecond screen supportMobile TV

Thank You!