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In orthogonal signalling with symbols containing more number of bits we need ____ power.

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In orthogonal signalling with symbols containing more number of bits we need ____ power.

(a) More

(b) Less

(c) Double

(d) None of the mentioned

I got this question in class test.

I would like to ask this question from M-ary Signalling and Performance topic in division Bandpass Modulation and Detection of Digital Communications

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The correct option is (a) More

To explain: In orthogonal signalling with symbols having more number of bits need more power but requirement per bit is reduced.

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