Table 1 DVB-T vs. DVB-T2 – features overview

FEC

Conv. Coding + RS

1/2, 2/3, 3/4, 5/6, 7/8

LDPC + BCH

1/2, 3/5, 2/3, 3/4, 4/5, 5/6

Modulation

COFDM: QPSK, 16QAM, 64QAM

COFDM: QPSK, 16QAM, 64QAM, 256QAM

Guard interval

1/4, 1/8, 1/16, 1/32

1/4, 19/256, 1/8, 19/128, 1/16, 1/32, 1/128

FFT size

2k, 8k

1k, 2k, 4k, 8k, 16k, 32k

Scattered pilots

8% of total

1%, 2%, 4%, 8% of total

Frequency bands

Band III, IV/V (VHF, UHF)

Band III, IV/V (VHF, UHF) + L Band

Channel raster

6, 7, 8 MHz

1.75, 5, 6, 7, 8, 10 MHz

C/N range (Rice channel)

5 (QPSK 1/2) to 23 dB (64QAM 7/8)

3(QPSK 1/2) to 24 dB (256QAM 5/6)

Max SFN Tx distance (8 MHz)

67.2 km (8k mode)

159.6 km (32k mode), 134.4 km (16k mode)

Rotated constellation

-

Robustness gain in channels with multipath, SFN, interference,...

Interleaving

Bit, frequency

Bit, cell, time, frequency

Diversity

SISO (SIMO if diversity receiver)

SISO, MISO (SIMO, MIMO if diversity receiver)

Max bit rate

31.7 Mbps (8k, 64QAM, CR = 7/8, GI = 1/32)

50.3 Mbps (32ke, 256QAM, CR = 5/6, GI = 1/128, 1% scattered pilots)

Data over DVB protocol

MPEG TS MPE

MPEG TS MPE, GSE