Stmicroelectronics S.a.

Julien Begey

Vincent Heinrich

Method of elementary updating a check node of a non-binary LDPC code during a decoding of a block encoded with said LDPC code, comprising receiving a first input message (U) and a second input message (V) each comprising ndoublets having a symbol and an associated metric, delivering an output message (S) possessing noutput doublets by computing a matrix of ncombined doublets on the basis of a combination of the doublets of the two input messages (U,V), and reducing the number of the combined doublets so as to obtain the noutput doublets of the output message (S) possessing the nlargest or lowest metrics. The method further includes tagging redundant symbols within each input message (U, V) and fixing same at a reference value, the value of the metric of each combined doublet resulting from a combination of at least one doublet comprising a tagged redundant symbol.

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Offemont, France

Julien Begey