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Modified stability table for 2-D digital filters

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1 Author(s)
Jury, E.I. ; Dept. of Electr. & Comput. Eng., Miami Univ., Coral Gables, FL, USA

A modified stability table is obtained for checking the stability of 2-D digital filters. In this table, the appropriate entries of the first column are equivalent to the appropriate minors of the Hermitian Schur-Cohn matrix. Thus the positivity of the latter matrix requires the positivity checking of the (n-1) appropriate entries for one point, and the last entry, which is equivalent to the Schur-Cohn determinant, is to be checked for positivity for all |z|=1. This test is simpler than several others appearing in the literature

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Circuits and Systems, IEEE Transactions on  (Volume:35 ,  Issue: 1 )