| 摘要 |
<p>The embodiments of the present invention provide an encoding and decoding method and device, and relate to the field of communications, so that a code length of information processed at a single time is shortened. The encoding method includes: equally dividing input K-bit information into n blocks, where k 1 , k 2 , ..., and k n are used to represent each block of information; combining a ki th block of information with n-1 encoded code words V i-1 , V i-2 , ..., and V i-n+1 of k i-1 th , k i-2 th , ..., and k i-n+1 th blocks, to obtain a code word to be encoded, where when a sequence number of an encoded code word is smaller than or equal to 0, the encoded code word is history information; performing, by using an LDPC check matrix, encoding on the code word to be encoded, where a generated check bit and the k i th block of information form an encoded code word Vi; and outputting encoded code words V 1 , V 2 , ..., and V n , where the LDPC check matrix includes m layers, each layer includes N sub-matrixes, the N sub-matrixes are equally divided into n blocks according to columns, and each block includes N/n sub-matrixes. The embodiments of the present invention are applied in encoding and decoding.</p> |
