METHOD FOR ENCODING DATA MESSAGE FOR TRANSMISSION FROM TRANSMITTING STATION TO RECEIVING STATION AND DECODING METHOD, TRANSMITTING STATION, RECEIVING STATION AND SOFTWARE Russian patent published in 2011 - IPC H03M13/11 

FIELD: information technology.

SUBSTANCE: disclosed is a novel structure of irregular LDPC codes, which enables to obtain several of codes with different length from a single prototype code with a parity check matrix, given as H=[H_z H_i], where H_z defines a well-known pattern of the corresponding Tanner graph. The parity check matrices for longer codes are obtained as [H_z' "П" diag(H_i,…,H_i), where H_z' defines a longer zigzag pattern depending on the number of used matrices H_i and "П" represents a certain permutation.

EFFECT: improved method for encoding and decoding data message for longer code by reusing hardware components designed for decoding a prototype code.

12 cl, 9 dwg