Question

What is the parameter used to differentiate the overlay and underlay spectrum sharing technique?

a.

Delay in unlicensed spectrum

b.

Delay in licensed spectrum

c.

Degree of interference exhibited towards primary user

d.

Degree of interference exhibited towards secondary user

Posted under Cognitive Radio

Answer: (c).Degree of interference exhibited towards primary user Explanation:The overlay and underlay spectrum sharing techniques are classified based on the amount of interference directed towards the primary users while operating in the licensed spectrum band. Overlay exhibits zero interference while the underlay technique exhibits considerable interference which is regarded as noise by primary users.

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Q. What is the parameter used to differentiate the overlay and underlay spectrum sharing technique?

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