| 摘要 |
A tap selection section 502 divides sampling signals r(i,0) through r(i,7) obtained from a received OFDM signal into sampling signals subject to correction and sampling signals not subject to correction, sends sampling signals subject to correction to an FIR filter 503, and sends sampling signals not subject to correction to an FTT 505. FIR filter 503 takes sampling signals as variable gain, and also has a Fourier transform known coefficient as input. An adaptive algorithm section 511 converges the values of sampling signals that include a distortion component comprising variable gain of FIR filter 503 to an optimal value so that error value e(i,k) due to distortion decreases.
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