Realization of a nonlinear digital filter on a DSP array processor

Abstract

This paper presents the performance evaluation of a fast third-order Volterra digital filtering algorithm mapped onto an AT&T DSP-3 parallel processor. Five different implementations are considered. Speed-up results indicate that the "time-skewing" method is currently the fastest. An application to nonlinear communication channel equalization using a 64-QAM signal constellation is presented.