Issue No. 03 - March (1977 vol. 26)
M. Sundaramurthy , Sir George Williams University
This correspondence presents some results in fixed-point error analysis of fast Fourier transform algorithms. Two kinds of schemes for preventing overflow are considered in the analysis. The results, obtained for the decimation-in-frequency form of the algorithm, are compared with those of decimation-in-time. The results show that the error performance of the decimation-in-frequency algorithm is better than that of decimation-in-time.
Decimation-in-frequency, decimation-in-time, FFT algorithms, roundoff errors, signal-to-noise ratio.
V. Reddy and M. Sundaramurthy, "Some Results in Fixed-Point Fast Fourier Transform Error Analysis," in IEEE Transactions on Computers, vol. 26, no. , pp. 305-308, 1977.