Efficient discrete Fourier transform method
A discrete Fourier, efficient technology, applied in the direction of complex mathematical operations, etc., can solve the problems that have not been widely used, the meaning of real-time problem processing is not great, and the operation efficiency is low
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[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0035] Any feature disclosed in this specification (including the abstract and drawings), unless specifically stated, can be replaced by other equivalent or similar purpose alternative features. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.
[0036] In this specific embodiment, a 7-point DFT calculation is taken as an example for specific description.
[0037] Suppose the X vector of N=7 points is X=[5311276491]. The specific calculation method steps are:
[0038] 1) Decompose N and determine the number of iterations. ...
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