FIELD: physics; computer technology.
SUBSTANCE: invention concerns data coding and decoding, in particular, the way device for data coding, using codes with the low-density parity-check (LDPC). For this purpose parity-check bits are calculated for the received information. A base model matrix is defined for the biggest length of a code of each code speed. A set of {p (i, j)} translations in a base model matrix is used for definition of sizes of translations for all other lengths of codes of the same code speed. Values {p (f, i, j)} of shifting for the code size corresponding to spreading factor zf, are deduced from {p (i, j)} using uniform scaling p (i, j), and a model matrix is used by means of {p (f, i, j)} for definition of parity-check bits for the f-ro code.
EFFECT: increase of data coding and decoding accuracy.
10 cl, 5 dwg
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