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Additional resources for Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for digital terrestrial television

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When the in-depth interleaving is applied in the 2K or 4K modes, either hierarchical or non-hierarchical, the block interleaving process is repeated forty-eight times, thus providing the symbol interleaver with the blocks of useful data needed to produce four consecutive "2K OFDM symbols" and two consecutive "4K OFDM symbols". 2 Symbol interleaver In the 4K mode, the purpose of the symbol interleaver is to map v bit words onto the 3 024 active carriers per OFDM symbol. 1 Native symbol interleaver When the native 4K mode interleaver is implemented, the symbol interleaver acts on blocks of 3 024 data symbols.

1 Native symbol interleaver When the native 4K mode interleaver is implemented, the symbol interleaver acts on blocks of 3 024 data symbols. y'3 023). , Nmax-1 where, in case of native interleaver, Nmax = 3 024 in the 4K mode. 2 In-depth symbol interleavers When the in-depth interleaver is selected in the 2K mode or 4K mode contexts, the symbol interleaver acts on blocks of 6 048 data symbols, whatever the mode. y'6 047) is assembled from 48 groups of 126 data words. , Nmax-1 Where, Nmax = 6 048 always for in-depth interleavers, whatever the mode 2K or 4K.

A. a. a. 8 -3,9 -32,8 -3,9 -32,8 -3,9 -32,8 -3,9 -32,8 -3,9 -32,8 9 +3,9 -32,8 +3,9 -32,8 +3,9 -32,8 +3,9 -32,8 +3,9 -32,8 10 +4,25 -64,9 +4,25 -64,9 +4,25 -66,9 +4,25 -66,1 +4,25 -59,9 11 +5,25 -76,9 +5,25 -76,9 +5,25 -76,2 +5,25 -78,7 +5,25 -69,9 12 +6,25 -76,9 +6,25 -76,9 +6,25 -76,9 +6,25 -78,7 +6,25 -72,4 13 +10,25 -76,9 +10,25 -76,9 +10,25 -76,9 +11,25 -78,7 +11,25 -72,4 14 +12 -100 +12 -100 +12 -100 +12 -100 +12 -100 NOTE 1: Lower end of lower adjacent channel. NOTE 2: Vision carrier in lower adjacent channel.

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