DVB-S2 standard » History » Version 4
PASCHOS, Alexandros, 12/14/2015 10:55 PM
| 1 | 1 | PASCHOS, Alexandros | h1. DVB-S2 standard |
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| 2 | 1 | PASCHOS, Alexandros | |
| 3 | 1 | PASCHOS, Alexandros | Digital Video Broadcasting – Satellite 2nd Generation (DVB-S2) is a broadcast standard defined by ETSI (European Telecommunications Standard Institute) http://www.etsi.org/ in ETSI EN 302 307 [1] for satellite TV. It includes a powerful FEC system on LDPC (Low Density Parity Check) codes concatenated with BCH (Bose-Chaudhuri-Hocquenghem) codes, allowing Quasi-Error-Free operations very close to the Shannon Limit. It uses a wide range of code rates, QPSK, 8PSK 16APSK, 32APSK constellations and shape filtering with roll-off factors 0.35, 0.25 and 0.2. Of course the purpose of this project was not to implement the ETSI EN 302 307 but a simplified version in order to make performance calculations and observations over the USRPs. |
| 4 | 1 | PASCHOS, Alexandros | DVB-S2 standard was conceived in 2003, in order to replace the DVB-S standard [http://www.etsi.org/deliver/etsi_en/300400_300499/300421/01.01.02_60/en_300421v010102p.pdf] introduced in 1995. The need for broadcast services in HDTV and 3DTV drove the evolution of the DVB-S standard. In early 2014, the DVB Project [https://www.dvb.org/] standardized the DVB-S2X standard [http://www.etsi.org/deliver/etsi_en/302300_302399/30230701/01.04.01_20/en_30230701v010401a.pdf and http://www.etsi.org/deliver/etsi_en/302300_302399/30230701/01.04.01_20/en_30230701v010401a.pdf] with higher order modulations and smaller roll-off factors, improved spectral efficiency. Broadcast Satellite Service (BSS) uses specific frequency bands for each ITU Region in tha K_u band. |
| 5 | 1 | PASCHOS, Alexandros | |
| 6 | 1 | PASCHOS, Alexandros | h2. References |
| 7 | 1 | PASCHOS, Alexandros | |
| 8 | 4 | PASCHOS, Alexandros | [1] "ETSI EN 302 307":http://www.etsi.org/deliver/etsi_en/302300_302399/302307/01.02.01_60/en_302307v010201p.pdf |