GERARD FARIA
(GERARD.FARIA@TEAMCAST.COM)
© TeamCast 2011
DVB @ BES I NDIA 2011 - T2 : PERFORMANCES & FEATURES
26TH FEBRUARY 2011
1
ETERNAL DILEMMA : BITRATE VERSUS ROBUSTNESS
64/256 QAM
16QAM
QPSK
HDTV
SDTV
LDTV
FIXE
PORTABLE
© TeamCast 2011
DVB @ BES I NDIA 2011 - T2 : PERFORMANCES & FEATURES
MOBILE
26TH FEBRUARY 2011
2
MORE BITRATE, MORE ROBUST, MORE COVERAGE
HDTV over
Terrestrial Digital TV
© TeamCast 2011
DVB @ BES I NDIA 2011 - T2 : PERFORMANCES & FEATURES
26TH FEBRUARY 2011
3
TRANSMITTED SIGNAL AT-A-GLANCE !
OFDM symbol
Orthogonal
Carrier
Spacing
Guard
Interval
Useful
Period
1K
8K
2K
16K
4K
32K
Time
Up to
50 Mbps
Broadcast
SSS: Synchro
P1 preamble
SSS : Sounding
Cont. / Scat. / TR pilots
SSS: Signalling
P2 preamble
T2 FRAME
© TeamCast 2011
DVB @ BES I NDIA 2011 - T2 : PERFORMANCES & FEATURES
26TH FEBRUARY 2011
4
SYSTEM ARCHITECTURE : 3 FUNCTIONAL BLOCKS
n * TS
PLP
...
...
...
n * GS
PLP
PLF
RF6
RF1
PLF



OFDM modulator can operate in SISO - SFN or MISO-SFN
Optionally, Time-Frequency-Slicing (TFS) allows operation of up to 6 RF channels




Channel Encoder applies Bit Interleaved Coded Modulation
BICM uses state-of-the-art FEC : the Low Density Parity Checkcode (LDPC)
BICM includes a flexible Time - Interleaver



© TeamCast 2011
BICM uses dense constellation : up to 256 QAM
Individual BICM encoding for up to 256 Physical Layer Pipes (PLP)
DVB @ BES I NDIA 2011 - T2 : PERFORMANCES & FEATURES
26TH FEBRUARY 2011
5
STATE-OF-THE-ART PHYSICAL LAYER
PLP
BB
BICM
PLP
BB
BICM
BICM
PLP
BB
BICM
...
...
...
BB
PLP
© TeamCast 2011
Sig
RFi
Sound
PLP
PLP
Sync
Sync
Sig
BB
BICM
BB
BICM
DVB @ BES I NDIA 2011 - T2 : PERFORMANCES & FEATURES
Data
RFi
Sound
Data
26TH FEBRUARY 2011
6
OFDM MODULATION WITH MISO CAPABILITIES
Physical
Layer
Frame
IFSISO
IFMISO
[PLF]
© TeamCast 2011
DVB @ BES I NDIA 2011 - T2 : PERFORMANCES & FEATURES
26TH FEBRUARY 2011
7
MORE BITRATE  +16 MBPS @ SAME ROBUSTNESS
Fix
Reception
2G DVB-T2 for “FIX” reception
Coverage
Threshold
40 Mbps 256QAM2/3
1G DVB-T for “FIX” reception
24 Mbps
DVB @ BES INDIA 2011 - T2 : PERFORMANCES & FEATURES
64QAM2/3
17..18 dB
Pure Signal
Noisy Signal
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17..18 dB
26TH FEBRUARY 2011
8
MORE ROBUSTNESS  +6 dB @ SAME BITRATE
Portable
Reception
2G DVB-T2 for “PORTABLE”
18 Mbps
16QAM3/5
9 dB
1G DVB-T for “PORTABLE”
18 Mbps 16QAM2/3 15 dB
Pure Signal
Noisy Signal
© TeamCast 2011
DVB @ BES INDIA 2011 - T2 : PERFORMANCES & FEATURES
26TH FEBRUARY 2011
9
WHAT IS THE UNIQUE POSSIBLE CONCLUSION ?


DVB-T2 SPECIFICATIONS DESIGN IMPLIED UP TO 40.000 HOURS OF WORK
DVB-T2 HAS BEEN DEPLOYED BY THE PIONEERS OF DIGITAL TV : UK !
 March 2010 : Commercial Launch of “Freeview HD”
 July 2010 : 50% UK households served with DVB-T2
 January 2011 : up to 3 M receivers in operation

DVB-T2 HDTV Set Top Boxes cost : <100£ <118€ <162US$

DVB-T2 IS BEING TO BE DEPLOYED

DVB-T2 IS (SURELY) THE MOST EFFICIENT DTTV STANDARD

WILL IT BE THE MOST USED DIGITAL TERRESTRIAL BROADCAST
© TeamCast 2011
DVB @ BES I NDIA 2011 - T2 : PERFORMANCES & FEATURES
IN
THREE CONTINENTS (EUROPE, ASIA, AFRICA)
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26TH FEBRUARY 2011
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