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The mixing and filtering of DSB removes

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The mixing and filtering of DSB removes

(a) LSB

(b) USB

(c) LSB & USB

(d) None of the mentioned

I have been asked this question during an interview.

This intriguing question originated from Evaluating Digital Communication System and Allocation of Communication Resources topic in portion Modulation and Coding Trade-off of Digital Communications

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Right answer is (b) USB

Easy explanation: The mixing and filtering yields frequency shifted channels and it removes the USB.

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