DISTURBING SIGNAL DETECTION DEVICE AND OFDM RECEPTION DEVICE USING THE SAME

摘要

There are disclosed a disturbing signal detection device capable of detecting a disturbing signal and improving the ability of correcting the error of the signal containing disturbance and an OFDM reception device capable of improving the ability of reception of the signal containing disturbance. The disturbing signal detection device and the OFDM reception device IFFT-calculates the transmission path characteristic calculated from a pilot signal by an IFFT calculation unit. When the time axis signal obtained as a result of the IFFT calculation exceeds a threshold value, a threshold value processing unit replaces the value with “0”. An FFT calculation unit performs an FFT calculation on the signal processed by the threshold value processing unit and converts it into a signal of frequency axis. A disturbance detection unit interpolates the signal of the frequency axis obtained by the FFT calculation unit in the temporal direction and the frequency direction, thereby calculating the disturbance signal added to the OFDM signal band.