DVB-S2, or Second Generation Digital Video Broadcasting, is the the successor for the popular and widely used DVB-S.
Key improved features from the original DVB-S are:
- The coding scheme is a powerful LDPC code. Chosen because of its low encoding complexity they have a special structure, known as Irregular Repeat-Accumulate Codes.
- VCM & ACM (Variable & Adaptive coding and Modulation) modes. This fully allows optimisation to the bandwidth by changing the transmission parameter dynamically.
- Enhanced modulation scheme up to 32APSK
- Backward Compatibility
DVB S2 achieves significantly better performance than all predecessors.
Single Transport Stream (TS)
BPSK, QPSK, 8PSK, 16QAM
Multiple Transport Stream and GSE
Variable and Adaptive Coding and Modulation
LDPC + BCH
Single-Carrier QPSK with multiple streams
BPSK, QPSK, 8PSK, 16QAM, 32APSK