Apparatus and method for channel encoding and decoding in communication system using low-density parity-check codes

摘要

An apparatus and a method for channel encoding/decoding in a communication system are provided. The apparatus and the method generate LDPC-encoded blocks with various lengths from an LDPC codewith fixed length in a communication system using a Low-Density Parity-Check (LDPC) code. The apparatus and the method perform shortening using a predetermined number of shortened bits and perform LDPC encoding. The apparatus and the method apply predetermined rules according to the predeterminednumber of shortened bits and determine the number of bits to be punctured, and perform puncturing based on the determined number of punctured bits.