In March 2014 the DVB-S2 specification became a 2-part document to accommodate the new DVB-S2 Extensions (DVB-S2X).
he DVB-S2 will remain a stand-alone specification and the DVB-S2X specification is optional.
DVB-S2 = BlueBook A83-1 / EN302307-1
DVB-S2X = BlueBook A83-2 / EN302307-2
You can get the new DVB-S2X logo by registering on www.dvbservices.com
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How does it work? DVB-S2X is based on the well-established DVB-S2 specifcation. It uses the proven and powerful LDPC Forward Error Correction (FEC) scheme in combination with BCH FEC as outer code and introduces the following additional elements: • Smaller roll-off options of 5% and 10% (in addition to 20%, 25% and 35% in DVB-S2) • A fner gradation and extension of number of modulation and coding modes • New constellation options for linear and non-linear channels • Additional scrambling options for critical co-channel interference situations • Channel bonding of up to 3 channels • Very Low SNR operation support down to -10 dB SNR • Super-frame option This results in the following spectral effciencies for DVB-S2X compared to DVB-S2: