SVP UDT-4K, Manual

Page: 182 / 193

UDT-4K UHD HEVC Digital Camera Transmitter
MANUAL V0
182
This new feature provides additional robustness for low order constellations.
Figure C.2: Constellation Rotation
C.2.3 DVB-T vs DVB-T2
Next, it is shown a comparison table between the two existing DVB terrestrial
standards. The new features of the DVB-T2 standards respect to the DVB-T
are in bold.
DVB-T DVB-T2
(new/improved options
in bold)
FEC Convolutional
Reed Solomon
1/2, 2/3, 3/4, 5/6, 7/8
LDPC + BCH
1/2, 3/5, 2/3, 3/4, 4/5,
5/6
Modes QPSK, 16QAM, 64QAM QPSK, 16QAM, 64 QAM, 256
QAM
Guard Interval 1/4, 1/8, 1/16, 1/32 1/4, 19/128, 1/8, 19/256,
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
Continual Pilots 2.0% of total 0.4% - 2.4% (0.4% -
0.8% in 8k–32k)
Bandwidth 6, 7, 8 MHz 1.7, 5, 6, 7, 8, 10 MHz
Typical data rate (UK) 24 Mbit/s 40 Mbit/s
Max. Data rate (@20 dB
C/N)
31.7 Mbit/s (using 8 MHz) 45.5 Mbit/s (using 8 MHz)
Required C/N ratio (@24
Mbit/s)
16.7 dB 10.8 dB
Table E.1: DVB-T vs DVB-T2