18
DVB
DVB
-
-
S2 Spectral Efficiency (bps/Hz) versus C/N (dB)
S2 Spectral Efficiency (bps/Hz) versus C/N (dB)
0,0
0,5
1,0
1,5
2,0
2,5
3,0
3,5
4,0
4,5
-3-2-1012345678910111213141516
C/N [dB] in R
s
R
u
[bit/s] per unit R
s
QPSK
8PSK
16APSK
32APSK
DVB-S
Dotted lines= modulation constrained Shannon limit
DVB- DSNG
DVB-S2 Spectral Efficiency
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DVB‐S2QPSK
1/2
DVB‐S2QPSK
1/2
DVB‐SQPSK
1/2
DVB‐SQPSK
1/2
