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Method for designing stable 2-D digital filters

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2 Author(s)
K. P. Prasad ; Indian Institute of Technology, Department of Electrical Engineering, Madras, India ; P. S. Reddy

A method for designing 2-dimensional stable recursive digital filters is presented. It dispenses with the computationally difficult task of separately testing for the stability of a 2-d digital transfer function, as it is ensured at all stages in the course of an optimisation algorithm. The method is essentially based on the propeties of 2-variable positive real functions.

Published in:

Electronics Letters  (Volume:13 ,  Issue: 13 )