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Low-rate coding using incremental redundancy for GLDPC codes

Cunche, Mathieu and Savin, Valentin and Roca, Vincent and Kraidy, G. and Soro, Alexandre and Lacan, Jérôme Low-rate coding using incremental redundancy for GLDPC codes. (2008) In: International Workshop on Satellite and Space Communications (IWSSC'08), 01-03 Oct 2008, Toulouse, France .

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Official URL: http://ieeexplore.ieee.org/search/wrapper.jsp?arnumber=4656817

Abstract

In this paper we propose a low-rate coding method, suited for application-layer forward error correction. Depending on channel conditions, the coding scheme we propose can switch from a fixed-rate LDPC code to various low-rate GLDPC codes. The source symbols are first encoded by using a staircase or triangular LDPC code. If additional symbols are needed, the encoder is then switched to the GLDPC mode and extra-repair symbols are produced, on demand. In order to ensure small overheads, we consider irregular distributions of extra-repair symbols optimized by density evolution techniques. We also show that increasing the number of extra-repair symbols improves the successful decoding probability, which becomes very close to 1 for sufficiently many extra-repair symbols.

Item Type:Conference or Workshop Item (Paper)
Additional Information:This paper appears in: Satellite and Space Communications, 2008. IWSSC 2008. IEEE International Workshop on Publication Date: 1-3 Oct. 2008 On page(s): 299 - 303 ISBN: 978-1-4244-1947-0
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
French research institutions > Institut National de la Recherche en Informatique et en Automatique - INRIA
French research institutions > Commissariat à l'Energie Atomique et aux énergies alternatives - CEA
Laboratory name:
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Deposited By: Jérôme Lacan

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