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)

1 University of Utah
2 Lab-STICC_UBS_CACS_IAS
3 IMS - Laboratoire de l'intégration, du matériau au système
4 ELEC - Département Electronique
5 Lab-STICC_TB_CACS_IAS

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.

Domaines: Electronique

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⟩