B. Beliczynski et al., IIR FILTER DESIGN VIA HANKEL-NORM OPTIMAL APPROXIMATION OF FIR PROTOTYPE FILTERS - A STREAMLINED APPROACH, Electronics Letters, 30(4), 1994, pp. 292-293
An improved algorithm for Hankel-norm optimal approximation of FIR by
IIR discrete-time transfer functions is given which results in a strai
ghtforward and computationally efficient implementation which is less
error-prone than previous approaches.