DocumentCode :
3074854
Title :
Efficient CAD tools for the coefficient optimisation of arbitrary integrated digital filters
Author :
Jain, R. ; Vandewalle, J. ; De Man, H.
Author_Institution :
Katholieke Universiteit Leuven, Heverlee, Belgium
Volume :
9
fYear :
1984
fDate :
30742
Firstpage :
602
Lastpage :
605
Abstract :
An interactive CAD methodology is presented for designing digital filters with optimised discrete coefficients. The objective is to minimise the cost of integration C(under\\tilde{a}) subject to the constraint that the desired specifications on the complex frequency transfer function H(w,under\\tilde{a}) are satisfied. The vector a represents the fixed coefficients in the filter network. For VLSI DSP architectures, where multiplication is implemented using software controlled or hardwired shift-and-add operations, C(under\\tilde{a}) is defined as the total number of non-zero bits in the discrete representation of under\\tilde{a} . An accurate multiparameter analysis technique, based on the bilinear property of H(w,under\\tilde{a}) , is exploited to develop numerically reliable and computationally efficient tools for function evaluation and feasible region determination. These are built into a CAD framework together with tools for computing C(under\\tilde{a}) and predicting the location of the minima of C(under\\tilde{a}) Extremely fast optimisation strategies using this framework are demonstrated, for different filter topologies with up to 10 coefficients.
Keywords :
Application software; Cost function; Design automation; Design optimization; Digital filters; Digital signal processing; Frequency; Laboratories; Optimization methods; Very large scale integration;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '84.
Type :
conf
DOI :
10.1109/ICASSP.1984.1172618
Filename :
1172618
Link To Document :
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