Application of DVB-S2 for DVB-T & DVB-T2 Transport

DVB-S2 is the second-generation standard for satellite broadcasting produced by the DVB project. Using state-of-the-art FEC (LDPC) for channel encoding in association with various modulations as QPSK, 8PSK, 16APSK and 32APSK, it achieves quasi-Shannon-capacity transmission performance. When compared to its predecessor DVB-S, DVB-S2 requires a reduced C/N margin for an equivalent error protection overhead and accordingly even operated using a smaller receiving antennas and a smaller transmission power, DVB-S2 performs as efficiently as DVB-S. — Beyond the intrinsic performance of its physical layer, DVB-S2 provides enhanced flexibility with regard to the organisation of the payload: with DVB-S2, several multiplex streams (MPTS) can be carried on a single transponder. This novel feature is of particular interest for the distribution of several DVB-T (or DVT-T2) multiplexes to transmitter sites using a single transponder but preserving the synchronisation required to operate terrestrial Single Frequency Networks (SFN). The DVB-S2 link, in this case, is 100% transparent to the terrestrial SFN synchronisation constraints. — For contribution and distribution networks, upgrading the satellite link to DVB-S2 is clearly the right choice to save money: whatever the number of receiving sites, the Return-On-Investment (RoI) is immediate, thanks to the DVB-S2 overall performances!

Published

2011-10

Content type

Original Research

Keywords

DVB-S, DVB-S2, DVB-T, DVB-T2, Digital Terrestrial TV, DTTV distribution

DOI

10.5594/M001099

ISBN

978-1-61482-940-9