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AM has a modulation index.

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AM has a modulation index.

(a) True

(b) False

This question was addressed to me in class test.

I want to ask this question from Frequency Modulation Vs. Amplitude Modulation in chapter Modulation Techniques for Mobile Radio of Wireless/Mobile

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Right answer is (b) False

Easiest explanation: Unlike AM, FM has a modulation index. Hence, bandwidth occupancy can be varied to obtain greater signal to noise performance. Thus, it is possible to tradeoff bandwidth occupancy for improved noise performance.

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