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25-09-2021 Cognitive Radio

Q. Which among the following is an appropriate unit for spectrum usage in cognitive radio?

A. Bits per unit area
B. Noise per unit area
C. Noise temperature per unit area
D. Symbols per unit area


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Dapzoi Verified
Commented on 2021-09-25 14:21:09 (IST)
Answer:A

Explanation: Spectrum usage in the cognitive radio includes the area of propagation along with the amount of spectrum used. Hence the number of bits per unit area is an appropriate unit for spectrum usage in cognitive radio. This necessitates the inclusion of propagation in the Shannon limit.