ENCODING METHOD, DECODING METHOD, CODER AND DECODER Russian patent published in 2018 - IPC H03M13/11 H03M13/23 

FIELD: physics.

SUBSTANCE: encoding method for performing precise encoding based on a sparse parity (LDPC-CC) with a time-varying period of q using a polynomial parity with the velocity encoding of (n-1)/n, in which the information sequence is taken as the input data; and the information sequence is encoded using equation 1 as a polynomial parity #g to satisfy 0, and #g is the g-th sequence number of the time-varying period q: (Dα^#g,1.1+Dα^#g,1.2+...+Dα^#g,1,m)X₁^(D)+(Dα^#g,2.1+Dα^#g,2.2+…+Dα^#g,2,m)X₂^(D)+…+Dα^#g,n-1.1+Dα^#g-n,1.2+…+Dα^#g,n-1,m)X_n-1^(D)+(D^b#g,1+D^b#g,2+…+Db^{# g, r-1+1})P(D)=0. (equation 1).

EFFECT: providing the enhanced error correction capability.

8 cl, 75 dwg, 9 tbl