Question

Asked Jan 28, 2020

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Find out the value of the twiddle factor given below:

W_{8}^{-4}

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Step 1

The twiddle factor for N-point discrete Fourier transform (DFT) is defined as

In this case, the given twiddle factor is

Step 2

Using equation (1), the value of the given twiddle factor can be evaluated in the following way:

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