METHOD FOR DECODING LDPC-CODES AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC H03M13/35 

FIELD: physics.

SUBSTANCE: method for decoding LDPC-codes, comprising: determining the signal-to-noise ratio for each received signal codeword; and decoding the received signal codewords based on the "trust propagation" algorithm and "based on the "minimum-sum" algorithm, characterized in that decoding is introduced, based on the "posterior probabilities" algorithm, the range of signal-to-noise values is set for each algorithm. The algorithms are switched depending on the signal-to-noise value for each word, followed by the subsequent combining of the results of signal decoding according to different algorithms. The "trust propagation" algorithm is used for signal-to-noise ratio values of less than 1.8 dB, the "minimum-sum" algorithm for the signal-to-noise values in the range of 1.8 dB to 4.95 dB, the algorithm for the "posterior probabilities" with the signal-to-noise ratio to be greater than 4.95 dB.

EFFECT: reducing the average computational complexity of decoding while preserving the decoding quality of the received signal.

3 cl, 1 dwg