F–1
Appendix F. DVB-S/S2 BER
Performance at Quasi-Error Free
(QEF)
The Forward Error Correction (FEC) technique used in Digicast receivers complies with ETSI
EN 300 421 for DVB-S and ETSI EN 302 307 for DVB-S2. The information provided below
demonstrates the Es/No to provide "Quasi Error Free" (QEF) performance for a packet error rate
PER of 10
-7
. A PER of 10
-7
corresponds to an approximate BER in the order of 3 x 10
-10
.
Test Configuration:
Assumptions:
Symbol Rate: 20 Msps
QEF =
10
‐
7
PER
Frame Size = 64,800 (Normal Frames)
Es/No = C/N
Pilots: Off
Roll Off: 35%
Nominal Input Power: -48 dB
L-Band Frequency: 1,170 MHz
Input Range: -25 to -50 dBm
Recorded Data DVB-S:
Type
Modulation
FEC
Es/No dB
DVB-S QPSK
1/2
2.92
DVB-S QPSK
2/3
4.67
DVB-S QPSK
3/4
5.76
DVB-S QPSK
5/6
6.73
DVB-S QPSK
7/8
7.49
