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Performances & Features

Performances & Features. Gerard FARIA (gerard.faria@teamcast.com). Eternal Dilemma : Bitrate versus Robustness. Digital TV. Mobile TV. BITRATE. ROBUSTNESS. More Bitrate , More Robust , More Coverage. HDTV over Terrestrial Digital TV. Larger SFN cells. PORTABLE indoor (better).

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Performances & Features

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  1. Performances & Features Gerard FARIA(gerard.faria@teamcast.com) DVB @ BES India 2011 - T2 : Performances & Features

  2. Eternal Dilemma : Bitrate versus Robustness Digital TV Mobile TV BITRATE ROBUSTNESS DVB @ BES India 2011 - T2 : Performances & Features

  3. More Bitrate, More Robust, More Coverage HDTV over Terrestrial Digital TV Larger SFN cells PORTABLE indoor (better) MORE BITRATE >+30% MORE ROBUST >+30% MORE COVERAGE >+30% as MOBILE as DVB-T Re-use antennas DVB @ BES India 2011 - T2 : Performances & Features

  4. Orthogonal Carrier Spacing OFDM symbol Time Guard Interval Useful Period frequency Transmitted Signal at-a-glance ! 8K 1K 16K 2K 32K 4K Up to 50 Mbps Broadcast DVB @ BES India 2011 - T2 : Performances & Features SSS: Synchro P1 preamble SSS : Sounding Cont. / Scat. / TR pilots SSS: Signalling P2 preamble T2 FRAME

  5. System Architecture : 3 functional blocks n * TS T2 Gateway Channel Encoder OFDM Modulator PLP RF1 PLF • 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) ... ... ... n * GS PLP PLF RF6 DVB @ BES India 2011 - T2 : Performances & Features

  6. State-of-the-Art Physical Layer Sync PLP OFDM Modulator INPUT PROCESS BB Bit Interleaved Coded Modulation & Rotated Constellation BICM FRAME BUILDER Sig PLP BB BICM RFi Sound PLP BB BICM Data PLP BB BICM Sync OFDM Modulator (MISO option) ... ... ... Sig PLP BB BICM RFi Sound PLP BB BICM Data State-of-Art LDPC FEC and Time Interleaver Dense Constellations (QPSK..256 QAM) More FLEXIBILITY (per Service) Dynamic Allocation Of Resources World First MISO Broadcast DVB @ BES India 2011 - T2 : Performances & Features

  7. OFDM modulation with MISO capabilities Physical Layer Frame [PLF] IFSISO IFMISO Optional ALAMOUTI (MISO 2x1) 6 FFT sizes 1K 2K 4K 8K 16K 32K 7 GI sizes 1/128, 1/32, 1/16, 19/256, 1/8, 19/128,1/4 8 sets of PILOTS (C, S, TR) Two PAPR methods ACE / TR DVB @ BES India 2011 - T2 : Performances & Features

  8. MORE bitrate +16 Mbps @ Same robustness Coverage Threshold Fix Reception 1G DVB-T for “FIX” reception 24 Mbps 64QAM2/3 17..18 dB Pure Signal Noisy Signal DVB @ BES India 2011 - T2 : Performances & Features 2G DVB-T2 for “FIX” reception 40 Mbps 256QAM2/3 17..18 dB

  9. MORE robustness  +6 dB @ Same bitrate Portable Reception 1G DVB-T for “PORTABLE” 18 Mbps 16QAM2/3 15 dB Pure Signal Noisy Signal DVB @ BES India 2011 - T2 : Performances & Features 2G DVB-T2 for “PORTABLE” 18 Mbps 16QAM3/5 9 dB

  10. 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 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 ? DVB @ BES India 2011 - T2 : Performances & Features

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