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Efficient lattice realizations of adaptive IIR algorithms

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2 Author(s)
S. L. Netto ; Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada ; P. Agathoklis

Computationally efficient adaptive IIR-filter algorithms are presented based on lattice realizations allowing the adaptive filter stability to be easily monitored. New simplified recursive-in-order equations relating the parameters of the direct-form realization with the ones of two lattice realizations are presented. These equations lead to a simplified technique to compute the regressor vector and to a general method to implement any adaptive IIR algorithm using lattice realization. Results indicate that the proposed lattice-based algorithms converge to a set of parameters that realize the same transfer function as the corresponding direct-form algorithms

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IEEE Transactions on Signal Processing  (Volume:46 ,  Issue: 1 )