DVB-S2 is a newer specification of the DVB-S (Digital Video Broadcasting) standard, ratified by ETSI in March 2005.

Specifications and performance

The authors claim that DVB-S2 performance gain over DVB-S is circa 30%. DVB-S2 is to be introduced now in Europe. On Astra 19.2°E since november 2005 two transponders send in DVB-S2. DVB-S2 in Europe is tightly tied with the introduction of HDTV and H.264.

Main features:

• DVB-S2 combines DVB-S (intended for final consumers) with DVB-DSNG (used by professional users),
• Adaptative coding to optimize the use of satellite transponders.
• 4 modulation modes: QPSK, 8PSK (used in non-linear transponders near to saturation); 16APSK and 32APSK (for professional, semi-linear applications).
• Improved rolloff: α = 0.20 and α = 0.25 in addition to the DVB-S α = 0.35.
• Forward error correction: DVB-S2 uses a FEC system based on concatenation of the Bose-Chaudhuri-Hochquenghem code with a LDPC (low density parity check). Performance should be 0.7 dB close to the Shannon limit.
• Cheap to implement.
• Integrated DVB-DATA.

Reference

• ETSI Standard TR 102 376 V1.1.1: Digital Video Broadcasting (DVB) User guidelines for the second generation system for Broadcasting, Interactive Services, News Gathering and other broadband satellite applications (DVB-S2)

See also

• DVB-S
• HDTV

External links

• DVB-S2 white paper (final)
• White paper on bandwidth efficiency
• DVB-S2 — ready for lift off, article in the EBU technical review.

Television technology | video codecs

High-definition television

DVB-S2 | DVB-S2 | DVB-S2