METHODS OF ENCODING AND DECODING USING FAST LDPCA CODE AND APPARATUSES USING THE SAME

摘要

PURPOSE: Methods for encoding and decoding using a fast LDPCA(Low Density Parity Check Accumulate) code and apparatuses for decoding and encoding using the same are provided to reduce the complexity of a decoder by reducing an iterative process for decoding an LDPCA code. CONSTITUTION: An LLR(Log Likelihood Ratio) Intrinsic value is calculated(S300). The LLR Intrinsic value and a first estimated coefficient value are used as the same meaning and an entropy is calculated based on the calculated LLR Intrinsic value(S310). The number of parity bit transmission is calculated based on the calculated entropy(S320). One parity bit is transmitted based on the number of first parity bit transmission in which a bit plane is calculated. The bit plane is restored based on the parity bit to which the bit plane is transmitted(S330).