| 摘要 |
PROBLEM TO BE SOLVED: To provide a transmission line response estimator capable of enlarging a delay time range of transmission line response estimation, and suppressing degradation by multi-pass waves exceeding a time range capable of estimation, and a broadcast receiver.SOLUTION: The transmission line response estimator includes: a blind section for blinding reception signals; an FFT section for transforming blind section output to a frequency domain; a known pattern signal generation section for generating frequency domain signals of a known pattern; a transmission line response calculation section for calculating a transmission line response from FFT section output and known pattern frequency domain signals; an IFFT section for transforming output of the transmission line response calculation section to a time domain; an FFT window control section for generating a plurality of window signals of different widths or different widths and shift amounts for the blind section; a reception quality detection section for detecting reception quality using output of an equalization section for equalizing the reception signals in output of the IFFT section and thereafter; and an FFT window determination section for determining one with the excellent reception quality from a plurality of FFT windows on the basis of the reception quality detected for each of the plurality of different window signals. |
