Comtech EF Data CDM-710G Especificações descarregar pdf (Página 238)

100

101

CDM-710G High-Speed Satellite Modem Revision 1

Eb/No Measurement MN-CDM710G

B–2

Example: In the diagram that follows, the (Co+No)/No measured is 4.6 dB. If Rate 1/2 QPSK is

used, this corresponds to an Eb/No of approximately 2.8 dB (DVB-S2).

The relationship used to derive the table values is as follows (only simple way for DVB-S2):

Eb/No = 10 log

(10

(Co+No/No )/10)

-1) – 10 log

(Spectral Efficiency)

and:

• Eb/No and (Co+No)/No are expressed in dB;

• Spectral Efficiency includes the modulation type, code rate, overhead and framing

and is shown in Tables B-1 and B-2.

1 2 ... 233 234 235 236 237 238 239 240 241 242 243 244 245 246

Comentários a estes Manuais

Sem comentários

Comtech EF Data CDM-710G Especificações Página 238

Comentários a estes Manuais

Manuais e produtos relacionados com Redes Comtech EF Data CDM-710G