Technical Specification
Table B.11 DVB-S2 Satellite Receiver Input – DVB-S Eb/No Ratio
Convolutional FEC
Rate
Eb/No Ratio (dB) in IF Loop for correct
MPEG-2 system operation
1/2 4.5
2/3 5.0
3/4 5.5
5/6 6.0
7/8 6.4
Eb/No ratio is referred to user bit-rate Ru188. See EN 300 421 specification. For
more detailed specification information and advice on performance in specific
applications, please contact Customer Services.
Table B.12 DVB-S2 Satellite Receiver Input – DVB-S2 Es/No Ratio
LDPC FEC Rate DVB-S2 Theoretical
6
Es/No Ratio (dB) in
perfect linear channel for correct
MPEG-2 system operation
1/2 QPSK 1.00
3/5 QPSK 2.23
2/3 QPSK 3.10
3/4 QPSK 4.03
4/5 QPSK 4.68
5/6 QPSK 5.18
8/9 QPSK 6.20
9/10 QPSK 6.42
3/5 8PSK 5.50
2/3 8PSK 6.62
3/4 8PSK 7.91
5/6 8PSK 9.35
8/9 8PSK 10.69
9/10 8PSK 10.98
For more detailed specification information and advice on performance in specific
applications, please contact Customer Services.
6
Add 0.2 dB (0.4 dB for FEC 3/5) to any system calculation for modulator – demodulator implementation margin
EN/LZT 790 0003/2 R1A
B-14
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