摘要:
The present invention provides an apparatus and method of transmitting/receiving a signal supporting a plurality of code rates in a communication system using a block LDPC code. The child parity check matrix used for encoding/decoding includes a plurality of parity blocks comprising permutation or zero matrixes in order to facilitate encoding. Furthermore, the used child parity check matrix has an extended structure of a parent parity check matrix. Puncturing can be employed in order to obtain more code rates. Hence a parent codeword, a child codeword having code rate less that the code rate of the parent codeword, and a child codeword having code rate greater than the code rate of the parent codeword can be generated by only using the child parity check matrix.
摘要:
A method and apparatus for channel encoding and decoding in a communication system using punctured Low-Density Parity-Check (LDPC) code is provided. The puncturing pattern depends on the modulation scheme and is based on puncturing of parity bit sets that reflect the properties of the LDPC codes, which are preferably LDPC codes as defined in the context of the DVB-S2 specification.
摘要:
The invention relates to a method and apparatus for a channel encoding using a Low-Density Parity-Check (LDPC) code, the method comprising: determining a number of parity bits for puncturing; forming parity bit sets from dividing the parity bits at predetermined intervals; determining a number of parity bit sets based on the number of parity bits for puncturing; and puncturing parity bits based on the determined number of parity bit sets to be punctured, and according to a predetermined order of parity bit sets to be punctured,
wherein the order of parity bit sets to be punctured is determined as 6, 4, 13, 9, 18, 8, 15, 20, 5, 17, 2, 22, 24, 7, 12, 1, 16, 23, 14, 0, 21, 10, 19, 11, 3, when a codeword length is 16200 and an information length is 7200.
摘要:
The invention relates to a method and apparatus for a channel encoding using a Low-Density Parity-Check (LDPC) code, the method comprising: determining a number of parity bits for puncturing; forming parity bit sets from dividing the parity bits at predetermined intervals; determining a number of parity bit sets based on the number of parity bits for puncturing; and puncturing parity bits based on the determined number of parity bit sets to be punctured, and according to a predetermined order of parity bit sets to be punctured,
wherein the order of parity bit sets to be punctured is determined as 6, 4, 13, 9, 18, 8, 15, 20, 5, 17, 2, 22, 24, 7, 12, 1, 16, 23, 14, 0, 21, 10, 19, 11, 3, when a codeword length is 16200 and an information length is 7200.