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DVB-S2 is designed for broadcast services including standard and HDTV, interactive services including Internet access, and (professional) data content distribution. The development of DVB-S2 coincided with the introduction of HDTV and H.264 (MPEG-4 AVC) video codecs. Two new key features that were added compared to the DVB-S standard are:
The DVB-S2 selection committee made decoder complexity estimates for the turbo code proposals using a much less efficient serial decoder architecture rather than a parallel decoder architecture. This forced the turbo code proposals to use frame sizes on the order of one half the frame size of the LDPC proposals. [citation needed]
In 2016, the GBS program manager developed the GBS Phase-IV capability that included an upgraded Transportable Ground Receive Suite (TGRS), development of Suitcase and Rucksack Portable Receive Suites (SPRS and RPRS), and integration of the new Digital Video Broadcasting – Satellite – Second Generation (DVB-S2) waveform that should provide ...
The resilience of APSK to amplifier and channel non-linearities afforded by its low PAPR have made it especially attractive for satellite communications, including DVB-S2. [3] A modified constellation diagram of 16-APSK. Typically 16-APSK will have 15 degree phase offset on the outer ring, which is not depicted here.
DVB-S2X is a digital satellite television broadcast standard. It has been standardized by DVB Project in March 2014 as an optional extension of DVB-S2 standard. [ 1 ] It will also become an ETSI standard.
Digital Video Broadcasting – Satellite (DVB-S) is the original DVB standard for satellite television and dates from 1995, in its first release, while development lasted from 1993 to 1997. The first commercial applications were by Canal+ in France [ citation needed ] and Galaxy in Australia, enabling digitally broadcast, satellite-delivered ...
The UNIC architecture employs DVB-S2 standard for downlink and DVB-RCS standard for uplink. Normal VSAT dishes (1.2 to 2.4 m diameter) are widely used for VoIP phone services. A voice call is sent by means of packets via the satellite and Internet. Using coding and compression techniques the bit rate needed per call is only 10.8 kbit/s each way.
The description above is given for what is now called a serially concatenated code. Turbo codes, as described first in 1993, implemented a parallel concatenation of two convolutional codes, with an interleaver between the two codes and an iterative decoder that passes information forth and back between the codes. [6]