A parallel architecture for adaptive frequency-domain Volterra filtering

Abstract

A parallel-serial implementation for an adaptive nonlinear Volterra filter, which exploits the symmetric properties of kernels in the frequency domain, is presented. The realization is based on the successive generation of the m-th order frequency domain of the kernel definition in terms of lower order domains. An efficient implementation structure of the frequency-domain adaptive filters is presented using a specific array of identical processor elements. A great degree of modularity and regularity ensures suitability of the proposed architecture for fast implementation using VLSI technologies.