Fixed-point digital signal processors (DSPs) have limited dynamic range to deal with digital data. This application report proposes a scheme to test and scale the result output from each Fast Fourier Transform (FFT) stage in order to fix the accumulation overflow. The radix-4 FFT algorithm is selected since it provides fewer stages than radix-2 algorithm. Thus, the scaling operations are minimized. This application report is organized as follows:

spra654-Autoscaling Radix-4 FFT for TMS320C6000.pdf

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