| 摘要 |
Sub-bands including incoming wave components detected on the basis of a delay profile are determined, and if there is an overlap in non-stopband frequency characteristics between filters that adjacent sub-bands pass through, a sub-band including these sub-bands is determined. A frequency interpolation filter unit (4) having a passband set through which the determined sub-band passes limits the band of an output signal of a time interpolation filter unit (3) and interpolates channel characteristics in the frequency direction. |
