Restoration of the signal
passed through non-ideal low-pass filter
A. Yu. Zrazhevskiy, V. A. Korotkov
Kotelínikov Institute of Radio
Engineering and Electronics of Russian Academy of Sciences, Fryazino
April 12, 2013
Abstract. In this work the
restoration of the signal passed through non-ideal low-pass filter (LPF) is
considered. It is
shown that by using inverse filtering it is possible to restore partially the original
signal. Complete recovery is possible only by using information about the
finite signal duration and information about the bandwidth of the filter.
Keywords: signal restoration,
low-pass filter, Fourier transform.