High Speed Programmable Filtering Using Fast Fourier Transform (FFT) Processing
Norman F. Krasner · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1982
Fast Fourier transform methods are attractive techniques for implementing high speed programmable filters, especially when flexibility, accuracy, and sharp filter transition regions are important considerations. In this paper are some design considerations in the implementation of such filters. A new high capacity, high speed FFT architecture is presented which is being incorporated in a nearly completed development model for a flexible series of FFT processors. It is shown how this processor may be efficiently embedded in an overall programmable filtering structure.