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A CRC usefulness assessment for adaptation layers in satellite systems

Cantillo, Juan and Lacan, Jérôme and Buret, Isabelle A CRC usefulness assessment for adaptation layers in satellite systems. (2006) In: 24th AIAA International Communications Satellite Systems Conference (ICSSC), 11-14 Jun 2006, San Diego, United States .

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Abstract

This paper assesses the real usefulness of CRCs in today's satellite network-to-link adaptation layers under the lights of enhanced error control and framing techniques, focusing on the DVB-S and DVB-S2 standards. Indeed, the outer block codes of their FEC schemes (Reed-Solomon and BCH, respectively) can provide very accurate error-detection information to the receiver in addition to their correction capabilities, at virtually no cost. This handy feature could be used to manage on a frame-by-frame basis what CRCs do locally, on the frames' contents, saving the bandwidth and processing load associated with them, and paving the way for enhanced transport of IP over DVB-S2. Mathematical and experimental results clearly show that if FEC has been properly congured for combined error correction and detection, having an uncorrected event after FEC decoding is likely to be an extremely improbable event. Under such conditions, it seems possible and attractive to optimize the way global error-control is done over satellite links by reducing the role of CRCs, or even by removing them from the overall encapsulation process.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to AIAA. The original PDF of the article can be found at AIAA website: http://www.aiaa.org/
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National des Etudes Spatiales - CNES
Université de Toulouse > Ecole Nationale de l'Aviation Civile - ENAC
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
Other partners > Rockwell Collins (FRANCE)
Other partners > Thales (FRANCE)
Other partners > Telecom ParisTech (FRANCE)
Other partners > Direction Générale de l’Aviation Civile - DGAC (FRANCE)
Laboratory name:
Statistics:download
Deposited By:Jérôme Lacan

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