The canonic linear-phase FIR lattice structures

Abstract

The Linear phase(LP) Finite Impulse Response(FIR) filters are widely used in many signal processing systems which are sensitive to phase distortion. In this article, we obtain a canonic lattice structure of a LP-FIR filter with a complex impulse response. This lattice structure is based on some novel lattice stages obtained from some properties of symmetric polynomials. This canonic lattice structure exploits the redundancy in the zeros of a LP-FIR filter.