Patent ID: 8514959

Claim:
A MIMO transmitting apparatus comprising: a retransmission data selecting section that selects retransmission data requiring retransmission, based on a received quality at a communicating party; a data rearranging section that rearranges the retransmission data and new data that is to be transmitted which is separate from the retransmission data, based on an error rate according to each bit position in one symbol and on a number of bits of the retransmission data and the new data which are arranged in the bit positions; and a transmitting section that simultaneously transmits the retransmission data and the new data rearranged by the data rearranging section from antennas which are different for each substream, wherein, when the number of bits of the retransmission data arranged in a first bit position of a higher error rate in the one symbol is equal to or smaller than the number of bits of the new data arranged in a second bit position of a lower error rate in the one symbol, the second bit position being other than the first bit position of the higher error rate, the data rearranging section performs the rearrangement between the substreams so that the retransmission data arranged in the first bit position of the higher error rate and the new data arranged in the second bit position of the lower error rate are exchanged.