A NOVEL GENERIC HYBRID ARCHITECTURE FOR RADIX-R FAST FOURIER TRANSFORM

Abstract

Pipelined FFT architectures are divided into series, parallel, and hybrid architectures. Series architecture offer small area at the expense of low thoughput while parallel architecture offer high throughput at the expence of large area. Hybrid architectures are an intermediate point between series and parallel architecture where we can tune area and throughput requirement.Our work proposes a novel generic hybrid architecture for radix-r FFT. The proposed architecture offers great savings in memory requirements compared to currently available architectures using normal input order.