A Polynomial Zero Attracting Affine Projection Algorithm for Sparse System Identification

摘要

A polynomial zero attracting affine projection algorithm is prosed in this work for sparse system identification. The existing zero attracting algorithms based on affine projection algorithm for sparse system identification, consider an objective function which is a combination of anl2-norm and an approximation ofl0-norm. The difference between these algorithms is the approximation of thel0-norm. In order to further improve the zero attraction capability of sparse adaptive algorithms based on affine projection algorithm, a polynomial is used to approximate thel0-norm. Simulation results verify that the proposed algorithm is effective for sparse system identification.