The wireless communication apparatus and an error detection coding process

Error correction code LDPC; in the case of using the (Low-Density Parity-Check LDPC) codes, the wireless communication apparatus that can be performed with high accuracy error detection while suppressing a decrease in throughput. In this wireless communication apparatus, CRC (Cyclic Redundancy Check) coding unit (101), based on the column weight of the LDPC code of the parity check matrix, CRC encoding performed CRC coding on only a portion of the transmission bit sequence generates data, LDPC encoding section (102), using the parity check matrix and the same parity check matrix used in the CRC encoding in CRC encoding section (101) for CRC encoding data performing LDPC encoding to generate the LDPC encoded data.