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Which needs more signal power?(a) BPSK(b) 16-QAM(c) BPSK & 16-QAM(d) None of the mentionedI 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

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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