Title :
Varying null locations and the number of nulls in DFT windows
Author_Institution :
Rockwell International, Anaheim, CA, USA
Abstract :
An approach is presented for varying the discrete Fourier transform (DFT) frequency response by the use of a weighting sequence derived from convolved weightings. The nulls of the response may be varied within a finite set while maintaining low-amplitude sidelobes. The method is attractive when the DFT is mechanized with Winograd´s small N algorithms.
Keywords :
Fourier transforms; DFT windows; Winograd´s algorithms; discrete Fourier transform; frequency response; null locations; weighting sequence; Algorithm design and analysis; Automata; Convolution; Discrete Fourier transforms; Frequency response; Learning automata; Shape;
Journal_Title :
Systems, Man and Cybernetics, IEEE Transactions on
DOI :
10.1109/TSMC.1983.6313190
