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The envelope of a bandpass noise is __________

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The envelope of a bandpass noise is __________

(a) Uniformly distributed

(b) Rayleigh

(c) Ricean

(d) Gaussian

I have been asked this question in an online quiz.

Enquiry is from Rayleigh and Ricean Distribution topic in portion Mobile Radio Propagation: Small – Scale Fading and Multipath of Wireless/Mobile

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The correct answer is (b) Rayleigh

The explanation: The envelope of only bandpass noise is Rayleigh distribution. Rayleigh distribution is a continuous probability density function for positive random variables.

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