APPARATUS AND METHOD OF ENCODING LDPC CODE USING MESSAGE PASSING ALGORITHM

摘要

An apparatus and a method for encoding a LDPC(Low Density Parity Code) are provided to reduce complexity of hardware by calculating a check node value and a parity bit using a message passing algorithm applying an offset. An input converter(1110) converts a type of an input bit from a binary type to a decimal type with a sign. A parity calculator(1120) calculates a parity bit by calculating a check node value about the input bit and an arbitrary parity bit according to the message passing algorithm. A parity corrector(1130) corrects the calculated parity bit according to the parity check result of the calculated parity bit. An output converter(1140) couples the input bit and the corrected parity bit.