Standardized DVB-T2 RF specifications - DigitalEurope

Table 8 – Immunity to co-channel interference from a single 1.7MHz DAB signal
(I/C PFP1)
10- MULTIPATH PERFORMANCE
10- 1- SFN multipath performance
10- 1- 1- Static 0dB echo
Mode I/C dB
6 – 32KN 256Q 3/5 1/8 PP2 7MHz -4
8 – 32KE 256Q 2/3 1/16 PP4 8MHz -5
The required C/N for picture failure point PFP1 should be obtained when the channel
contains two paths with relative delays as shown in Table 9. All paths have zero phase at the
channel centre.
The DVB-T2 signal should be set to -50 dBm at the tuner input.
Table 9 – C/N Requirements for 0dB Echo (PFP1)
Mode Echo Delay
1.95 µsec 95% Guard
Interval
C/N dB C/N dB
1 - 8KE QPSK 1/2 1/16 PP48MHz 5.3 5.3
2 - 16KE 16 QAM 2/3 19/128 PP38MHz 14.5 14.5
3 - 16KE 64 QAM 2/3 19/256 PP28MHz 20.2 20.2
4 - 16KN 256 QAM 3/5 1/32 PP48MHz 23.2 23.2
5 – 32KN 256Q 3/5 1/32 PP48MHz 23.2 23.2
6 – 32KN 256Q 3/5 1/8 PP2 7MHz 23.6 23.6
7 – 32KE 256Q 2/3 1/128 PP7 8MHz 24.5 24.5
8 – 32KE 256Q 2/3 1/16 PP4 8MHz 25.2 25.2
9 – 32KE 256Q 3/4 1/32 PP6 8MHz 27.4 27.4
10- 1- 2- Variable power echo
The required C/N for picture failure point (PFP1) shown in Table 10 should be obtained when
the channel contains two paths with relative delays shown in Table 11, where the relative
power level of the two paths are dynamically changing including 0dB echo level crossing.
The C/N value is defined at the 0dB level crossing. On a typical channel simulator, a
frequency separation of 0.1Hz would be selected as 0.1Hz “pure doppler”. All paths have
zero phase at the channel centre.
The DVB-T2 signal should be set to -50 dBm at the tuner input.
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