Hi all! For the 2048 point FFT implementation I have used two 1024 point Radix-4 (Decimation-in-frequency) FFT and for final stage I have used 2048 point (Decimation-in-time) Radix-2 FFT. But outputs are incorrect. When input is a pulse at x[i] = {1 when i = 1, 0 otherwise} the real part of output is cosine with frequency = 2, since I have expected the cosine with frequency = 1. Likewise for the imaginary part of output. Thanks for replies.
Mixed-Radix 2048 point FFT algorithm
Started by ●July 24, 2007