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M-ary QAM signal have constant energy per symbol.

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M-ary QAM signal have constant energy per symbol.

(a) True

(b) False

The question was asked during an online exam.

I'm obligated to ask this question of Combined Linear and Constant Envelope Modulation Techniques topic in division Modulation Techniques for Mobile Radio of Wireless/Mobile

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Correct choice is (b) False

For explanation: M-ary QAM does not have constant energy per symbol. It also does not have constant distance between possible symbol states. It reasons that particular values of M-ary QAM signal will be detected with higher probability than others.

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