Quick Fourier transformation implementation device and method
A Fourier transform and fast technology, applied in the field of fast Fourier transform implementation devices, can solve the problems of long operation cycle, low maximum operating frequency, and large storage space, so as to increase the maximum operating frequency, simplify the circuit, reduce The effect of storage space
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[0053] The technical solutions of the present invention will be described clearly, accurately and completely in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0054] DFT and IDFT are a relationship between the time domain and the frequency domain of digital signals. At the same time, in the OFDM system, they are also an implementation algorithm for demodulation and modulation. In signal processing, with the convenience of processing, the data is often enlarged or reduced by a real multiplicative factor as a whole. The principle of DFT is as formula (1):
[0055] X ( k ) = X n = 0 N - 1 x ( n ) W ...
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