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Priyanka Tomar • 35.28K Points
Coach 

Q.                      is based on FDMA/FDD.

(A) gsm
(B) w-cdma
(C) cordless telephone
(D) amps
Correct : Option (D)

Explanation: 
 the first us analog cellular system, the advanced mobile phone system (amps) is based on fdma/fdd. a single user occupies a single channel while the call is in progress.

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