Ericsson RX8000 Series - Page 217

Annex B
Parameter Specification
Miscellaneous
DVB-S Phase noise tolerance
3
SSB phase-noise power spectral density < -68
– 10*log(Rs/20) dBc/Hz at δF = 10 kHz offset
Phase noise power spectral density of the form
C – 20*Log(δF)
δF = Frequency offset from carrier
Rs = Symbol-rate (Msymbol/s)
DVB-S2 Phase noise tolerance
4
-25 dBc/Hz at δF = 100 Hz
-50 dBc/Hz at δF = 1 kHz
-73 dBc/Hz at δF = 10 kHz
-93 dBc/Hz at δF = 100 kHz
-103 dBc/Hz at δF = 1 MHz
-114 dBc/Hz at δF > 10 MHz
LNB power and control See Table B.14
Table B.12 shows the Eb/No requirements for DVB-S and Table B.13 for DVB-S2
Es/No requirements to ensure error-free demodulation for all supported FEC rates.
Table B.12 DVB-S2 Satellite 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 Ericsson Customer Services.
3
These specifications apply in the presence of thermal noise at the threshold Eb/N
0
ratio given in Table B.12
4
These specifications apply in the presence of thermal noise at the threshold Es/No ratio given in Table B.13 and assume a degradation to
the thermal noise performance of 0.3 dB.
EN/LZT 790 0005 R1A
B-13