When you get a DFT of a signal, you use the basis functions as:
$e^{-j2\pi kn/N}$
Why is it so? Why don't we use the conjugate, $e^{j2\pi kn/N}$, or any other function?
I have a question about matched filtering. Does the matched filter maximise the SNR at the moment of decision only? As far as I understand, ...
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