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Which needs more signal power?

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in Digital Communications by (828k points)
Which needs more signal power?

(a) BPSK

(b) 16-QAM

(c) BPSK & 16-QAM

(d) None of the mentioned

I got this question by my college professor while I was bunking the class.

The query is from Effects of Fading and Decision Theory in chapter Fading Channels of Digital Communications

1 Answer

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Best answer
The correct choice is (b) 16-QAM

Explanation: 16-QAM needs ten times more signal power than BPSK to attain the same probability of error.

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