A note on the design of IIR filters by the differential-correction algorithm
S. Crosara, Gian Antonio Mian · IEEE Transactions on Circuits and Systems · 1983
Attention is given to the sequence of linear programs to be solved in the differential-correction algorithm for finding the minimax IIR approximation to a given magnitude-squared frequency response. It is shown that it is possible to exploit the iterative nature of the linear programs involved, and obtain a simplified and efficient computational scheme.