Question

Which among the following is not a challenge for spectrum sensing?

a.

Continuous sensing of spectrum

b.

Energy consumption

c.

Switching between sensing and transmission

d.

Limit sensing when a single radio is deployed

Posted under Cognitive Radio

Answer: (d).Limit sensing when a single radio is deployed Explanation:Radio cannot sense the entire available spectrum continuously. An upper limit is established on energy consumption for a period of time. Thus accurate spectrum knowledge is unavailable at all times. Cross-layer interaction is required for switching between transmissions and sensing operations during in-band sensing operation.

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Q. Which among the following is not a challenge for spectrum sensing?

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