| 摘要 |
An apparatus and method are provided for transmitting and receiving a quasi-cyclic Low Density Parity Check (LDPC) code in a multimedia communication system. In the quasi-cyclic LDPC transmission method, a signal transmission apparatus generates a quasi-cyclic LDPC code, and transmits the quasi-cyclic LDPC code to a signal reception apparatus, wherein the quasi-cyclic LDPC code is generated by encoding an information word vector using a child parity check matrix which is generated by performing one of a scaling operation, a row separation operation and a row merge operation on a parent parity check matrix, and wherein the scaling operation is an operation in which a size of the child parity check matrix is determined, the row separation operation is an operation in which each of rows included in the parent parity check matrix is separated, and the row merge operation is an operation in which the rows included in the parent parity check matrix are merged. |
