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4. Challenges associated with using the DVB standard for satellite Internet access
This chapter presents the main optimization issues associated with the definition of an Internet access system based on the DVB standard and the elements associated with what is defined by the standard: optimization elements that are not presented, such as protocol enhancements above the network layer or network architecture, are not detailed.
4.1 Determining optimal modulation and coding
The first generation of DVB-S was designed for the worst-case scenario: the terminal at the extremities of the coverage with the maximum distance to the satellite and the worst weather conditions defined the modulation and coding for all terminals. This results in sub-optimization of the spectrum resource. To alleviate this problem, DVB-S2 and DVB-RCS2 introduce adaptive modulation...
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Challenges associated with using the DVB standard for satellite Internet access
Conclusion
Bibliography
Standards and norms
- Digital Video Broadcasting (DVB) ; Second generation framing structure, channel coding and modulation systems for Broadcasting, Interactive Services, News Gathering and other broadband satellite applications (DVB-S2). - ETSI EN 302 307 V1.2.1 - Août 2009
- Digital Video Broadcasting (DVB) ; Second Generation DVB Satellite System (DVB-RCS2) ; Interactive Satellite System Part 2 : Lower Layers for Satellite standard...
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https://www.etsi.org/technologies/dvb-s-s2
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French Space Agency (CNES)
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