Compare between simplex and duplex communication

Compare between simplex and duplex communication 
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simplex and duplex communication :

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Compare between simplex and full duplex communication on the basis of: 1) Definition 2) Sketch

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A 400 W carrier is amplitude modulated to a depth of 75%.Calculate the total power in AM wave. (i) Explain the types of noise in a communication system. (ii) Compare simplex and duplex mode of communication.

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