Radix-4 FFT Summary Our implementation of the radix-4 FFT is summarized as follows. First stage: The input data are divided by 4 to prevent overflow and the radix-4 DIF butterfly calculation is ...

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A highly efficient pipelined radix-2 squared FFT. Ported to both ASIC and FPGA technology and achieving a very high clock speed with minimal logic and memory. Also available is a variant ... The ...

The proposed 128-point FFT/IFFT processor employs mixed-radix (radix-2 and radix-23)algorithm to reduce the number of complex multiplications.

Zoom FFT spectra: (a) input spectrum; (b) processing scheme; (c) downconverted spectrum; (d) filtered and decimated spectrum. We could collect many time samples and perform a large-size radix-2 FFT to ...