Question

Which layer performs adaptive modulation and coding?

a.

Network layer

b.

Transport layer

c.

Physical layer

d.

Data link layer

Posted under Cognitive Radio

Answer: (c).Physical layer Explanation:Adaptive modulation and coding is the process of adjusting signal parameters such as the modulation type, coding technique, and protocol parameters to the characteristics of the channel selected for transmission. The adaptive modulation system requires channel state information at the transmitter.

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Q. Which layer performs adaptive modulation and coding?

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