LDPC (low density parity check) code weighed bit-flipping translation method

The invention discloses an LDPC code weighed bit-flipping translation method. The LDPC code weighed bit-flipping translation method comprises the following steps of (1) performing initialization; (2) computation of a syndrome S; (3) if S=0, stopping iteration and outputting the decoded code of z, or, computing the weight of every information node adjacent to every check node during computation; (4) computing the flipping function of every information node; (4) determining and stopping iterative detection. For LDPC codes with high row weight and high column weight, the LDPC code weighed bit-flipping translation method induces offset factors into the weight of the checking equations of existing algorithms to construct a more efficient bit-flipping function; simulation results show than when the bit error rate (BER) is equal to 10-5, compared with existing reliability-rate-based weighed bit-flipping (RRWBF) algorithms, the LDPC code weighed bit-flipping translation method can obtain a coding gain of 0.45 dB and