METHOD FOR NOISE-IMMUNE DECODING OF SIGNALS OBTAINED USING PARALLEL LOW-DENSITY PARITY CHECK CASCADE CODE Russian patent published in 2012 - IPC H03M13/11 

FIELD: information technology.

SUBSTANCE: first component code is decoded from information bits and first check bits; the information part of the code word is then selected and depending on the code word syndrome value, a rigid decision is taken for bits from the information part or said information part is interleaved and a second component code is decoded from the interleaved information part and second check bits, after which the information part of the code word is selected and second interleaving is performed, which is inverse to the first interleaving law, and depending of the code word syndrome value, a rigid decision is taken for bits from the information part or the information part is sent for generating the first component code, after which the entire cycle is repeated once more, wherein before the first interleaving, depending on the code word syndrome value, "cycling" situations are detected and eliminated in the first component code, which is decoded once more, and after decoding the second component code, depending on the code word syndrome value, "cycling" situations are detected and eliminated in the second component code, which is decoded once more or second interleaving is performed.

EFFECT: reduced probability of erroneous decoding and probability of failure of decoding signals.

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