Patent ID: 8391348
Filing Date: 2013-03-05
Classification: H04L

Abstract:
1. An interference wave detecting apparatus comprising: a first Fourier transformer configured to frequency-convert a received signal using a Fourier transform, to thereby generate a frequency-converted received signal; an extractor configured to extract a known information signal from the frequency-converted received signal; an interpolator configured to interpolate the known information signal in the frequency domain, to thereby generate a first transmission path estimation signal as a frequency-domain information signal; an inverse Fourier transformer configured to inverse-Fourier-transform the known information signal, to thereby generate a time-domain information signal; a waveform shaping section coupled to the inverse Fourier transformer and configured to receive the time-domain information signal and shape a waveform of the time-domain information signal, to thereby generate a shaped time-domain information signal; a second Fourier transformer configured to Fourier-transform the shaped time-domain information signal, to thereby generate a second transmission path estimation signal as a frequency-domain information signal; and a comparing-computing section coupled to the second Fourier transformer and configured to receive the frequency-domain information signal and compare the first transmission path estimation signal and the second transmission path estimation signal, to thereby generate an interference wave detection result which indicates a ratio of an interference wave of the received signal.