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Every frequency has ____ orthogonal functions.

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Every frequency has ____ orthogonal functions.

(a) One

(b) Two

(c) Four

(d) Six

I have been asked this question during an online interview.

My question comes from Modulation Techniques topic in chapter Modulation and Coding Trade-off of Digital Communications

1 Answer

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Best answer
The correct choice is (b) Two

Best explanation: Every frequency has two orthogonal functions – sine and cosine.

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