Fixed Point error analysis of Radix-4 and Radix-8 FFT algorithms
Shaik A. Qadeer, Mohammed Zafar Ali Khan · 2011
In this paper the analysis of overall quantization loss for the Radix-4 and Radix-8 Fast Fourier Transform (FFT) algorithms is extended to the case where the twiddle factor word length is different from the register word length. Simulation results, that validate the theoretical analysis, are then presented.