Digital communication

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Digital communication
H V KUMARASWAMY
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Topics in this session

• Probability of error in QPSK
• Non coherent ASK, FSK
• DPSK

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Probability of error

• The signal energy per bit

• The noise spectral density is

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or
In QPSK E 2 Eb
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BASK
Transmitter
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BASK Receiver
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Non coherent ASK
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Coherent FSK
Transmitter
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Coherent FSK
Receiver
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Non coherent FSK
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BPSK
TRANSMITTER
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Coherent BPSK
RECEIVER
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DPSK Differential PSK Non-coherent PSK
Transmitter
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Receiver
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Conclusion