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White noise has _______ power spectral density.

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White noise has _______ power spectral density.

(a) Constant

(b) Variable

(c) Constant & Variable

(d) None of the mentioned

This question was addressed to me in an interview for internship.

Question is from Signals and Noises topic in section Baseband Demodulation and Detection of Digital Communications

1 Answer

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Best answer
The correct choice is (a) Constant

Easy explanation: The AWGN has constant power spectral density.

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