| 摘要 |
A method and an apparatus for encoding/decoding a channel in a communication system are provided to generate a LDPC(Low Density Parity Check) code having a different block length by using information of a parity check matrix. A first parity check matrix information is detected(S510). A block length of a necessary LDPC code is confirmed(S520). A grouping size for an information word of a second parity check matrix is determined. A sub matrix corresponding to the information word of the second parity check matrix is comprised from the first parity check matrix(S530). A sub matrix corresponding to a parity of the second parity check matrix is comprised(S540). A coding is performed by using one among the first parity check matrix and the second parity check matrix. |
