METHODS AND SYSTEMS FOR COMPLEXITY REDUCTION IN DISCRETE FOURIER TRANSFORM COMPUTATIONS

摘要

In one embodiment, a computer-implemented method of discrete Fourier transform (DPT), FFT, or DCT computations on a system comprising a processor is described herein. In one example, the method includes receiving, with the processor, input complex samples from memory of the system, determining input vectors based on the received input complex samples, determining a DFT radix p of p macro blocks based on the input vectors, determining p independent DFT-L vectors based on the p macro blocks with L being based on p, and generating p DFT-N output vectors without reordering or shuffling output data based on the p independent DFT-L vectors.