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25-09-2021 Cognitive Radio

Q. Diffracted propagation undergoes attenuation at the rate of the third power of distance.

A. True
B. False


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Dapzoi Verified
Commented on 2021-09-25 14:23:22 (IST)
Answer: A

Explanation: Cognitive radio shifts communication from direct propagation to diffracted propagation. Diffracted propagation undergoes attenuation at the rate of the fourth power of distance. It hinders the ability of the radio to sense, calculate interference, and evaluate the outcome of communication.