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© TeamCast 2011 Performances & Features GERARD FARIA ([email protected]) 26TH FEBRUARY 2011 1 DVB @ BES INDIA 2011 - T2 : PERFORMANCES & FEATURES
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© TeamCast 2011
Performances &
Features
GERARD FARIA([email protected])
26TH FEBRUARY 2011 1DVB @ BES INDIA 2011 - T2 : PERFORMANCES & FEATURES
© TeamCast 2011
ETERNAL DILEMMA : BITRATE VERSUS ROBUSTNESS
226TH FEBRUARY 2011DVB @ BES INDIA 2011 - T2 : PERFORMANCES & FEATURES
BITRATE
HDTV SDTV LDTV
FIXE PORTABLE MOBILE
64/256 QAM 16QAM QPSK
Digital TV Mobile TV
ROBUSTNESS
© TeamCast 2011
MORE BITRATE, MORE ROBUST, MORE COVERAGE
326TH FEBRUARY 2011DVB @ BES INDIA 2011 - T2 : PERFORMANCES & FEATURES
Re-useantennas
HDTV overTerrestrial Digital TV
PORTABLEindoor (better)
as MOBILEas DVB-T
LargerSFN cells
MOREBITRATE>+30%
MOREROBUST>+30%
MORECOVERAGE>+30%
© TeamCast 2011
TRANSMITTED SIGNAL AT-A-GLANCE !
426TH FEBRUARY 2011DVB @ BES INDIA 2011 - T2 : PERFORMANCES & FEATURES
GuardInterval
UsefulPeriod
OFDM symbolOrthogonalCarrierSpacing
OrthogonalCarrierSpacing
TimeTime
freq
uenc
y
freq
uenc
y
1K
2K
4K
8K
16K
32K
T2 FRAME
SSS: SynchroP1 preambleSSS: SynchroP1 preamble
SSS: SignallingP2 preamble
SSS: SignallingP2 preamble
SSS : SoundingCont. / Scat. / TR pilots
SSS : SoundingCont. / Scat. / TR pilots
Up to50 Mbps
Broadcast
Up to50 Mbps
Broadcast
© TeamCast 2011 26TH FEBRUARY 2011 5DVB @ BES INDIA 2011 - T2 : PERFORMANCES & FEATURES
More COVERAGE OFDM modulator can operate in SISO - SFN or MISO-SFN Optionally, Time-Frequency-Slicing (TFS) allows operation of up to 6 RF channels
More ROBUSTNESS 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
More BITRATE & More FLEXIBILITY BICM uses dense constellation : up to 256 QAM Individual BICM encoding for up to 256 Physical Layer Pipes (PLP)
SYSTEM ARCHITECTURE : 3 FUNCTIONAL BLOCKS
n * TS
n * GS
T2Gateway
PLP
PLP
... ChannelEncoder
PLF
PLF
... OFDMModulator
RF1
RF6
...
© TeamCast 2011 26TH FEBRUARY 2011 6DVB @ BES INDIA 2011 - T2 : PERFORMANCES & FEATURES
STATE-OF-THE-ART PHYSICAL LAYER
BB
BB
BB
BB
BB
BB
PLP
PLP
PLP
PLP
PLP
PLP
INPUT
PROCESS
...
...
BICM
BICM
BICM
BICM
BICM
BICM
...
BitInterleaved
CodedModulation
&
Rotated Constellation
Sync
Sound
Data
Sig
RFiOFDM
Modulator(MISO option)
MoreFLEXIBILITY(per Service)
State-of-ArtLDPC FEC and
Time Interleaver
World FirstMISO
Broadcast
Dense Constellations
(QPSK..256 QAM)
Sync
FRAME
BUILDER
Sound
Data
Sig
RFiOFDM
Modulator
DynamicAllocation
OfResources
© TeamCast 2011
PhysicalLayerFrame
[PLF]IFMISO
IFSISO
OFDM MODULATION WITH MISO CAPABILITIES
726TH FEBRUARY 2011DVB @ BES INDIA 2011 - T2 : PERFORMANCES & FEATURES
OptionalALAMOUTI(MISO 2x1)
8 sets of PILOTS
(C, S, TR)
6 FFT sizes1K 2K 4K
8K 16K 32K
Two PAPRmethodsACE / TR
7 GI sizes1/128, 1/32,
1/16, 19/256, 1/8, 19/128,1/4
© TeamCast 2011
Pure SignalNoisy Signal
FixReception
MORE BITRATE +16 MBPS @ SAME ROBUSTNESS
826TH FEBRUARY 2011DVB @ BES INDIA 2011 - T2 : PERFORMANCES & FEATURES
2G DVB-T2 for “FIX” reception
40 Mbps 256QAM2/3 17..18 dB
Covera
ge
Th
resh
old
1G DVB-T for “FIX” reception
24 Mbps 64QAM2/3 17..18 dB
© TeamCast 2011
Pure SignalNoisy Signal
PortableReception
MORE ROBUSTNESS +6 dB @ SAME BITRATE
926TH FEBRUARY 2011DVB @ BES INDIA 2011 - T2 : PERFORMANCES & FEATURES
1G DVB-T for “PORTABLE”
18 Mbps 16QAM2/3 15 dB
2G DVB-T2 for “PORTABLE”
18 Mbps 16QAM3/5 9 dB
© TeamCast 2011 10DVB @ BES INDIA 2011 - T2 : PERFORMANCES & FEATURES
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 IN THREE CONTINENTS
(EUROPE, ASIA, AFRICA)
DVB-T2 IS (SURELY) THE MOST EFFICIENT DTTV STANDARD AVAILABLE NOWADAYS...
WILL IT BE THE MOST USED DIGITAL TERRESTRIAL BROADCAST STANDARD ?
WHAT IS THE UNIQUE POSSIBLE CONCLUSION ?
26TH FEBRUARY 2011
