METHOD FOR GENERATING HYBRID AUTOMATIC REQUEST RETRANSMISSION PACKET OF LOW DENSITY PARITY CHECK CODE

摘要

A method for generating hybrid automatic request retransmission packet of Low Density Parity Check code includes: A1) Low Density Parity Check code coder generates NFIR bit LDPC HARQ mother code codeword according to input K bit information packets; the codeword comprises bit information packets, extending check bit packets and puncturing check bit packets; the generated codeword is transmitted to the HARQ buffer (1); A2) the LDPC HARQ mother code codeword bit is rearranged in the HARQ buffer, the order of the information bit and the extending check bit is kept not changing, and the order of the puncturing check bit is changed (2); A3) the codeword bit from the rearranged HARQ mother code codeword is orderly selected; that is to say, the first transmission is started at the first system bit; then the starting position of every transmission follows the ending position of last transmission, in order to generate binary system sequence of the HARQ packet (3).