ENCODING METHOD, DECODING METHOD, ENCODER AND DECODER Russian patent published in 2014 - IPC H03M13/11 H03M13/23 

FIELD: information technology.

SUBSTANCE: encoding method for performing low-density parity-check convolutional coding (LDPC-CC) with a time-varying period q using a parity check polynomial with a coding rate of (n-1)/n (where n is an integer equal to or greater than 2), the time-varying period of q being a prime number greater than 3, the method includes receiving an information sequence as input and encoding the information sequence using an equation as a g-th (g=0, 1,…, q-1) parity check polynomial to satisfy 0: $$\begin{array}{l}\left({{\displaystyle D}}^{a\#g\mathrm{,1,1}}+{{\displaystyle D}}^{a\#g\mathrm{,1,2}}+{{\displaystyle D}}^{a\#g\mathrm{,1,3}}\right){{\displaystyle X}}_1\left(D\right)+\left({{\displaystyle D}}^{a\#g\mathrm{,2,1}}+{{\displaystyle D}}^{a\#g\mathrm{,2,2}}+{{\displaystyle D}}^{a\#g\mathrm{,2,3}}\right){{\displaystyle X}}_2\left(D\right)+\cdots \\ +\left({{\displaystyle D}}^{a\#g,n-\mathrm{1,1}}+{{\displaystyle D}}^{a\#g,n-\mathrm{1,2}}+{{\displaystyle D}}^{a\#g,n-\mathrm{1,3}}\right){{\displaystyle X}}_{n-1}\left(D\right)+\left({{\displaystyle D}}^{b\#g\mathrm{,1}}+{{\displaystyle D}}^{b\#g\mathrm{,2}}+1\right)P\left(D\right)=0\end{array}$$ .

EFFECT: high error correction capacity.

15 cl, 75 dwg, 9 tbl