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Low-rate coding using incremental redundancy for GLDPC codes
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 ï¬rst 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 1for sufficiently many extra-repair symbols.
Cited literature [17 references]
https://hal.inria.fr/inria-00305684
Contributor : Vincent Roca <>
Submitted on : Thursday, July 24, 2008 - 3:39:26 PM
Last modification on : Monday, December 14, 2020 - 4:36:23 PM
Long-term archiving on: : Tuesday, June 28, 2011 - 12:21:48 PM
Contributor : Vincent Roca <>
Submitted on : Thursday, July 24, 2008 - 3:39:26 PM
Last modification on : Monday, December 14, 2020 - 4:36:23 PM
Long-term archiving on: : Tuesday, June 28, 2011 - 12:21:48 PM
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iwssc08_small_rate_gldpc.pdf
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