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Draw and explain QAM / QASk / QPASK in detail.

Mumbai University > Electronics and Telecommunication Engineering > Sem 6 > Data Communication

Marks: 10 Marks

Year: Dec 2016

1 Answer
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It is combination of PSK and ASK (Hybrid Scheme)

To pure PSk though need hybrid 1, distance between two signal. To increase 'd' we have to heavily energy of every symbol. This is possible by changing amplitude of signal alongwith phase constellation diagram.

Energy of signal $S_1(t) = \sqrt{ES_1} = …

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