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|Title:||Finite-time-domain synthesis of linear time-variant digital filters by difference equations|
|Source:||Li, D. (1994-09). Finite-time-domain synthesis of linear time-variant digital filters by difference equations. Signal Processing 39 (1-2) : 167-177. ScholarBank@NUS Repository.|
|Abstract:||This paper presents a method for synthesizing a recursive linear time-variant digital filter in finite time domain. The desired filter can be nonrecursive and is given by its generalized frequency function. The synthesized filter is described by a linear difference equation with time-variant coefficients. These coefficients at a given time instant are derived recursively from those at the previous instants. In addition, for the determined coefficients at the previous instants, the coefficients at the given instant minimize the error between the generalized frequency function of the desired filter and that of the synthesized one at the given instant. The performance of this method is illustrated and compared with another available method through numerical examples. The results show an improvement of nearly two order of magnitude in the normalized mean squared error between the amplitudes of the generalized frequency function of the desired filter and that of the synthesized. © 1994.|
|Source Title:||Signal Processing|
|Appears in Collections:||Staff Publications|
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