| 摘要 |
To determine an appropriate transmission rate more efficiently in communication which uses multiple-input multiple-output technique, a communication apparatus (100) which selects one of a plurality of transmission rates determined by a set of modulation schemes for streams and communicates with an external device using the MIMO technique of performing transmission using a plurality of streams (ST1, ST2, ST3) includes a change means (106, S304) which changes the transmission rate, and a determination means (106, S307) which determines, based on a transmission power to be allocated to each stream and the modulation scheme of each stream, the transmission rate to be changed by the change means so as to make the power per bit of each stream at the transmission rate after change remain unchanged or increase.
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