SVP UDR-70, User Manual

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UDR-70 H.265 Portable Receiver
USER’S MANUAL V1.0
DVB-S vs DVB-S2 Performance
Figure 117: DVB-S vs DVB-S2 Performance
The figure above shows how the DVB-S2 standard is really close to
the Shannon limit.
Main differences between DVB-S and DVB-S2
DVB-S DVB-S2
Meant for broadcast only Fully transparent to all data
Fixed 188 byte/packets Baseband in 16 or 64 kbps
One TS/carrier CCM/MultiStream – VCM – ACM
RS and Viterbi coding LDPC and BCH coding
Need of high RX margin Can work within noise floor
QPSK / QPSK-8PSK-16QAM QPSK – 8PSK – 16APSK –
32APSK
35% and 25% Roll-off carrier 20% Roll off carrier
Consumer LNB’s work in QPSK
only
Pilot tones for extra synch in
8PSK
Table 48: Main differences between DVB-S and DVB-S2