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Non coherent receivers require more power than coherent receivers.

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Non coherent receivers require more power than coherent receivers.

(a) True

(b) False

I have been asked this question in an international level competition.

The question is from Techniques topic in division Cognitive Techniques of Cognitive Radio

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Correct answer is (b) False

Explanation: Non coherent receivers require less power than coherent receivers. This is because coherent receivers involve frequency and phase correction in their reception process. Since additional processes are carried out, more power is consumed. Similarly, higher symbol rate requires more processing speed, and consequently more power.

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