Restoration of the signal passed through non-ideal low-pass filter

 

A. Yu. Zrazhevskiy, V. A. Korotkov

Kotel’nikov Institute of Radio Engineering and Electronics of Russian Academy of Sciences, Fryazino branch
 

Received 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.