Title :
Adaptive bilinear digital filters
Author :
Forssén, Ulf ; Mossberg, Kåre
Author_Institution :
Dept. of Telecommun. Theory. R. Inst. of Technol., Stockholm, Sweden
Abstract :
It is demonstrated how adaptive algorithms can be applied to low-sensitivity digital filter structures. The structure considered is derived by a bilinear transformation of an analog ladder filter. The adaptive bilinear filter is used in system identification simulations and compared to a direct-form IIR (infinite impulse response) filter. It is demonstrated that the bilinear filter, although not unconditionally stable, has excellent stability properties. It is also shown that the adaptive algorithm can be used as a tool for synthesis of fixed filters
Keywords :
adaptive filters; digital filters; identification; low-pass filters; sensitivity analysis; stability; time-domain synthesis; adaptive algorithms; adaptive bilinear filter; bilinear transformation; fifth order low pass filter; fixed filters; low-sensitivity digital filter structures; stability properties; system identification simulations; time domain synthesis; Adaptive algorithm; Adaptive filters; Cost function; Digital filters; IIR filters; Passive filters; Poles and zeros; Signal processing; Stochastic processes; System identification;
Conference_Titel :
Circuits and Systems, 1991., IEEE International Sympoisum on
Print_ISBN :
0-7803-0050-5
DOI :
10.1109/ISCAS.1991.176433
