RADIO COMMUNICATION DEVICE AND REPETITION METHOD

摘要

Provided is a radio communication device which can obtain the maximum improvement effect of the error rate characteristic by repletion when an LDPC code is used as an error correction code. In this device, an LDPC encoding unit (101) performs LDPC encoding on a transmission bit string by using an inspection matrix so as to obtain an LDPC code word formed by a systematic bit and a parity bit and output it to a repletion unit (102) and output the inspection matrix to the repetition unit (102). The repetition unit (102) performs repetition in the ascending order of the column weight of the inspection matrix in the LDPC code word and if a plurality of bits have the same column weight, in the ascending order of the column weight of the inspection matrix of the check node connected to a variable node corresponding to the bit.