| 摘要 |
In a wireless communication apparatus, an index value control unit transmits, to a different wireless communication apparatus, index values which indicate precoding matrices for use in precoding of the different wireless communication apparatus, and a deprecoding unit performs deprecoding using precoding matrices corresponding to index values transmitted in the past, wherein the index value control unit transmits, at each transmission timing, the index values generated based on a result of channel condition measurement for entire or some sub-frequency bands of a predetermined frequency band, the count of the index values being less than that of the entire sub-frequency bands, and the deprecoding unit selects one of the index values transmitted in the past, according to the time or frequency of a data block for which no index value is transmitted, and performs deprecoding for the data block using the selected index value.
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