Ricardo A. Vargas (rickv@rice.edu)
Electrical and Computer Engineering, Rice University
Charles S. Burrus (csb@rice.edu)
Electrical and Computer Engineering, Rice University
This paper presents an efficient adaptive algorithm for designing
FIR digital filters that are efficient according to an Lp
error criteria. The algorithm is an extension of Burrus'
iterative reweighted least-squares (IRLS) method for
approximating Lp filters. Such algorithm will converge
for most significant cases in a few iterations. In some cases
however, the transition bandwidth is such that the number of
iterations increases significantly. The proposed algorithm
controls such problem and drastically reduces the number of
iterations required.