Title :
A note on “An accurate error analysis model for fast Fourier transform”
Author :
Adireddy, Srihari ; Prabhu, K.M.M.
fDate :
6/1/1999 12:00:00 AM
Abstract :
The expressions derived by Ma (see ibid., vol.45, p.1641, 1997) for error variance and average power expectation using the model that has been proposed are not accurate. In this paper, all the possible correlations have not been considered. The expressions have been modified to make them exact. Closed-form expressions for the correlation between errors of different stages have been derived. The expressions have been verified by comparing the predicted values using these expressions with the simulation values given by Ma
Keywords :
error analysis; fast Fourier transforms; accurate error analysis model; average power expectation; correlation; error variance; fast Fourier transform; simulation values; Closed-form solution; Error analysis; Fast Fourier transforms; Fixed-point arithmetic; Predictive models; Roundoff errors;
Journal_Title :
Signal Processing, IEEE Transactions on
