Patent ID: 8452229

Claim:
A radio communication apparatus that performs relay transmission between a first radio communication apparatus and a second radio communication apparatus, the radio communication apparatus comprising: a circuit, the circuit comprising: a receiving section that receives a first data symbol from the first radio communication apparatus, the first data symbol being formed with first systematic bits and first parity bits, and the first systematic bits and the first parity bits being subjected to error correction encoding; a demodulating section that demodulates the first data symbol to acquire the first systematic bits and the first parity bits; a decoding section that performs error correction decoding on the first systematic bits using the first parity bits to acquire a decoding result, the decoding result being formed with second systematic bits after the error correction decoding; an error determining section that determines whether or not there are errors in the decoding result; an encoding section that performs the error correction encoding on the decoding result to acquire third systematic bits and third parity bits, the third systematic bits and the third parity bits being subjected to the error correction encoding; a selecting section that selects the second systematic bits when there are errors in the decoding result, and selects the third systematic bits and the third parity bits when there are no errors in the decoding result; a modulating section that modulates the result selected by the selecting section to generate a second data symbol, the second data symbol including the second systematic bits when there are errors in the decoding result, and the second data symbol being formed with the third systematic bits and the third parity bits when there are no errors in the decoding result; and a transmitting section that transmits the second data symbol to the second radio communication apparatus.