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2.) Evaluate DPSK with message signal 1011001 and also explain DPSK (10 marks)

2.) Evaluate DPSK with message signal 1011001 and also explain DPSK

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Answer #1

Differential phase shifting key, here the phase of signal is sifted with relevance to the previous signal, here no reference is being considered. like if the data bit is low then it is not being reveresed and continue as it and if the data bit is high than it get reversed.DPSK nodulator is used to encode the two signal that are the carrier and modulator with 180 degree angle and with no reference phase signal and the transmitted can itslef be considered as the reference. DPSK demodulator is used to decode the signal.

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