| 摘要 |
An interpolation method selection processing section 41 derives, from a ZF output signal, an error in a frequency direction and an error in a time direction concerning two transmit antennas (TxAnt#0#1) used in two antenna transmission, respectively, and determines if the error in the frequency direction is smaller than the error in the time direction. In case the determination indicates that the error in the frequency direction is smaller than the error in the time direction concerning the two transmit antennas (TxAnt#0#1), a frequency interpolation processing section 43 interpolates the ZF output signal in the frequency direction and produces a provisional estimate. If it is determined that the error in the frequency direction is not smaller than the error in the time direction concerning the two transmit antennas (TxAnt#0#1), a time interpolation processing section 42 interpolates the ZF output signal in the time direction and generates a provisional estimate.
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