Question

Which among the following is an issue for routing in cognitive radio networks?

a.

Spectrum sensing

b.

Power allocation

c.

Spectrum knowledge

d.

Spectrum characterization

Posted under Cognitive Radio

Answer: (c).Spectrum knowledge Explanation:The routing layer requires information about the spectrum for determining the path of communication. The consolidation of information obtained by sensing and by characterization operations of the physical layer is a challenge as it is difficult to decide which information should be stored. The user requires local as well as global knowledge of the spectrum.

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Q. Which among the following is an issue for routing in cognitive radio networks?
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