sparos sat hd - Spaun
sparos sat hd - Spaun
sparos sat hd - Spaun
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
– SPAROS SAT HD Series –<br />
9.4 DVB-S2<br />
TUNER DEMODULATOR LDPC BCH DECODING<br />
MPEG<br />
BERi<br />
BERo<br />
PER<br />
Display of the values:<br />
• BERi : error rate before LDPC<br />
• BERo : error rate after LDPC<br />
• PER : error rate after BCH (lost packets)<br />
• MER : modulation error rate<br />
• LKM: link margin<br />
Remember:<br />
LDPC: Low Density Parity Check<br />
BCH: Bose Chauhuri Houquenohem<br />
In DVB-S2, the concatenation LDPC + BCH has replaced the concatenation Viterbi + Reed Solomon of the<br />
correction of the DVB-S.<br />
Display of the detected Modulation type:<br />
• the constellation (8PSK)<br />
• the Viterbi rate (2/3)<br />
p. 55
Change language