A Space-Time Redundancy Technique for Embedded Stochastic Error Correction

Chris Winstead 1 Yangyang Tang 2 Emmanuel Boutillon 2 Christophe Jego 3 Michel Jezequel 4, 5
2 Lab-STICC_UBS_CACS_IAS
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance
5 Lab-STICC_TB_CACS_IAS
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance
Abstract : An error-correction algorithm, referred as to Low Density Parity Check (LDPC) stochastic decoding technique, has recently been introduced for implementing iterative LDPC decoders in logic technologies with a high rate of transient faults. In this work, a modified algorithm that includes a feedback mechanism is first presented. A temporal majority logic is also applied at the decoder's output, providing an additional dimension of redundancy. By comparison to Gallager-A decoding method, the combination of feedback with temporal redundancy is shown to significantly increase the decoder's resilience against a high rate of internal upsets as a gain of up to three orders of magnitude.
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Chris Winstead, Yangyang Tang, Emmanuel Boutillon, Christophe Jego, Michel Jezequel. A Space-Time Redundancy Technique for Embedded Stochastic Error Correction. 7th International Symposium on Turbo Codes & Iterative Information Processing,, Aug 2012, Gothenburg, Sweden. pp.36-40. ⟨hal-00731050⟩

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