Annex B

 

 

Parameter

Specification

 

 

Miscellaneous

 

 

 

DVB-S Phase noise tolerance3

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 tolerance4

-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 FECEb/No Ratio (dB) in IF Loop for correct MPEG-2
Ratesystem 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.

3These specifications apply in the presence of thermal noise at the threshold Eb/N0 ratio given in Table B.12

4These 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