METHOD FOR SETTING NUMBER OF ITERATIVE DECODING, APPARATUS AND METHOD FOR LDPC DECODING

摘要

PURPOSE: A method for setting the number of iterative decoding, an LDPC decoding apparatus, and a decoding method thereof are provided to omit test decoding and parity check calculation by determining the times of repetitive decoding which is below minimum repetitive decoding number. CONSTITUTION: A decoding unit(210) restores a valid code word from a received signal by repetitively decoding the received signal. A decoding process, which is repetitively operated, includes test decode and error check. A SNR(Signal to Noise Ratio) estimation unit(220) estimates the SNR of a received signal. The SNR estimating unit estimates the SNR of the received signal according to an arbitrary SNR estimating method which is publicly known. A repetitive decode number setting unit(230) sets a minimum repetitive decode number about the received signal based on a measured SNR. A storage unit(240) stores one or more minimum repetitive decode numbers and one or more SNRs.