Title :
The Wigner distribution of linear time-variant systems
Author :
Pei, Soo-Chang ; Wang, Tswei-Ying
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
10/1/1988 12:00:00 AM
Abstract :
The Wigner distribution relation between the two input and output time-varying spectra of the linear time-variant system is derived. This mathematical relationship can show how a time-variant system modifies the time-varying spectrum of the input to determine that of the output, and this result will be very useful for time-variant filtering in the mixed time-frequency domain. A linear time-variant digital filtering example is used to show the effect of time-variant filtering by using the Wigner distribution
Keywords :
digital filters; filtering and prediction theory; linear systems; time-varying systems; Wigner distribution; digital filtering; linear time-variant systems; mixed time-frequency domain; time-variant filtering; time-varying spectra; Convolution; Costs; Equations; Filtering; Fourier transforms; Signal processing algorithms; Speech processing; Technological innovation; Time frequency analysis; Wiener filter;
Journal_Title :
Acoustics, Speech and Signal Processing, IEEE Transactions on
