2010 CS2204 Subject Notes
39
UNIT I FUNDAMENTALS OF ANALOG COMMUNICATION
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Transcript of 2010 CS2204 Subject Notes
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UNIT I FUNDAMENTALS OF ANALOG COMMUNICATION
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UNIT II DIGITAL COMMUNICATIONINTRODUCTION:
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FREQUENCY SHIFT KEYING:
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UNIT III DIGITAL TRANSMISSIONINTRODUCTION:
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Delta Modulation (DM) :
Delta Modulation (DM) :
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The modulator consists of a comparator, a quantizer, and an accumulator. The output of the accumulator is
Differential Pulse-Code Modulation (DPCM):Usually PCM has the sampling rate higher than the Nyquist rate .The encode signal
contains redundant information. DPCM can efficiently remove this redundancy.
Figure 3.28 DPCM system. (a) Transmitter. (b) Receiver.
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Processing Gain: