Title :
On the number of multiplications necessary to compute a length-2nDFT
Author :
Heideman, Michael T. ; Burrus, C. Sidney
Author_Institution :
Rice University, Houston, TX.
fDate :
2/1/1986 12:00:00 AM
Abstract :
The number of multiplications necessary and sufficient to compute a length-2nDFT is determined. The method of derivation is shown to apply to the multiplicative complexity results of Winograd for a length-pnDFT, for p an odd prime number. The multiplicative complexity of the one-dimensional DFT is summarized for many possible lengths.
Keywords :
Acoustic signal processing; Arithmetic; Computational complexity; Discrete Fourier transforms; Fast Fourier transforms; NASA; Roundoff errors; Signal processing algorithms; Speech processing;
Journal_Title :
Acoustics, Speech and Signal Processing, IEEE Transactions on
DOI :
10.1109/TASSP.1986.1164785