Device for calculating a discrete moving window transform and ap

Details Device for calculating a discrete moving window transform and ap Device for calculating a discrete moving window transform and ap

1986-06-26

1988-02-02

Tubbesing, T. H.

Communications: directive radio wave systems and devices (e.g.,

With particular circuit

Complex signal

342196, 364726, G01S 744

Patent

active

047231254

ABSTRACT:
A device for calculating a discrete moving window Fourier transform. It comprises an assembly of circuits receiving samples of the input signal (E.sub.m+n), the output signal of this assembly (.delta..sub.m) being applied to a plurality of N identical and parallel stages (E.sub.k). The assembly of circuits comprises a shift register conferring a delay of N sampling periods on the incident signal and an adder performing the subtraction:

REFERENCES:
patent: 3778606 (1973-12-01), Schmitt et al.
patent: 4058715 (1977-11-01), Niwa
patent: 4093994 (1978-06-01), Nussbaumer
patent: 4234880 (1980-11-01), Klemm
patent: 4462032 (1984-07-01), Martin
patent: 4566011 (1986-01-01), Lewis et al.
Dillard, G., "Recursive Computation of the Discrete Fourier Transform with Applications to an FSK Communication Receiver," IEEE National Telecommunication Conference, San Diego, Dec. 2-4, 1974, pp. 263-265.

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