FIELD: information decoding.
SUBSTANCE: invention relates to the field of information decoding using codes with a low density of evenness checks. The data decoding method is based on LDPC code, in which the code word conversion is carried out by an LDPC decoder containing at least two blocks for input data processing. The LDPC decoder contains a command memory in which control commands for data processing are sequentially written and cyclically fed to all blocks for input data processing. The LDPC code is a binary quasi-cyclic LDPC code described by a binary quasi-cyclic verification matrix with a certain circulant size. The weight of each circulant does not exceed 1. When control commands are received, the corresponding processing of non-zero circulants of the verification matrix occurs in the blocks for input data processing.
EFFECT: invention is aimed at reducing the control logic and increasing the clock frequency by storing the control action in the memory of the LDPC decoder.
1 cl, 3 dwg
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