T-VIPS CP560 - T2-Lite; Physical Layer Pipe

186 Validation of DVB-T2 Parameters
CP560 DVB-T2 Gateway User’s Manual Rev. 2.2 (3686) ID: um_t2gateway
E.1.2 T2-Lite
Tables E.3 and E.4 shows which Pilot Patterns that are allowed for a given combination of FFT
and Guard Interval. For table cells without any Pilot Patterns, the combination of FFT size and
Guard interval is not allowed.
For T2-Lite FFT sizes 32k and 1k is not allowed, and thus have no allowed Pilot Patterns. Also,
Pilot Pattern 8 is not allowed for any mode.
Table E.3 SISO: Valid Pilot Patterns for combinations of FFT
size and Guard Interval
1/32 1/16 1/8 1/4 1/128 19/128 19/256
32k
16k PP6,PP7 PP4,PP5 PP2,PP3 PP1 PP7 PP2,PP3 PP2,PP4,PP5
8k PP4,PP7 PP4,PP5 PP2,PP3 PP1 PP7 PP2,PP3 PP4,PP5
4k PP4,PP7 PP4,PP5 PP2,PP3 PP1
2k PP4,PP7 PP4,PP5 PP2,PP3 PP1
1k
Table E.4 MISO: Valid Pilot Patterns for combina-
tions of FFT size and Guard Interval
1/32
1/16 1/8 1/4 1/128 19/128 19/256
32k
16k PP4 PP3 PP1 PP4,PP5 PP1 PP3
8k PP4,PP5 PP3 PP1 PP4,PP5 PP1 PP3
4k PP4,PP5 PP3 PP1
2k PP4,PP5 PP3 PP1
1k
E.2 Physical Layer Pipe
The following validations applies to each Physical Layer Pipe (PLP).
The availability of FEC Code Rates for each PLP depends of the selection of the T2-Base or
T2-Lite profile as follows. An x marks a valid mode.
Table E.5 Valid FEC
Code Rates for each PLP
1/3 2/5 1/2 3/5 2/3 3/4 4/5 5/6
T2-Base X X X X X X
T2-Lite X X X X X X