Title :
Efficient linear phase filters based on switching and time reversal
Author :
Tsai, Chimin ; Fam, Adly T.
Author_Institution :
Dept. of Electr. & Comput. Eng., State Univ. of New York, Buffalo, NY, USA
Abstract :
A class of linear-phase digital filters is introduced. The switching and resetting approach is combined with that of time reversal to produce an inherently stable infinite-impulse-response-like FIR (finite-impulse response) filter with exact linear phase. The frequency response error due to FIR approximation is discussed for both parallel and cascade architectures. Design examples are provided to illustrate the computational complexity and the group delay of these filters. The method´s major drawback is the higher group delay involved in the time-reversal scheme
Keywords :
cascade networks; digital filters; linear network synthesis; cascade architecture; cascade architectures; computational complexity; finite-impulse response; frequency response error; group delay; infinite-impulse-response-like FIR; linear-phase digital filters; parallel architecture; switching; time reversal; Computational efficiency; Delay; Digital filters; Finite impulse response filter; Frequency response; IIR filters; Linear approximation; Mirrors; Nonlinear filters; Transfer functions;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.112260
