SVP UDR-70, Руководство пользователя

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159
UDR-70 H.265 Portable Receiver
USER’S MANUAL V1.0
D.3.3. 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 47:: DVB-T vs DVB-T2