A

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Q. In comparison to M-ary PSK, M-ary QAM bandwidth efficiency is            and power efficiency is

(A) identical, superior
(B) less, superior
(C) identical, identical
(D) superior, superior
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Explanation by: Admin 
 the power spectrum and bandwidth efficiency of qam modulator is identical to m-ary psk modulation. but, in terms of power efficiency qam is superior to m-ary psk.

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