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I
Modulation of Signals: Principles of Analog modulation technique like
AM, FM, PM, SSB, Generation & detection. Frequency division multiplexer.
Pulse modulation: Pulse transmission over band-limited signals, sampling
theory, pulse amplitude modulation.
II Digital Communication: PCM, DCSM, DM, ADM, comparison of above
systems on the basis of performance creiteria such as bit transmission,
signaling rate, error probability, S/N ratio, bandwidth requirement. ISI &
Eye diagram.
III Digital Modulation technique: Data transmission using
techniques such as PSK, FSK, QFSK (QAM), MSK Inter system comparison.
IV Introduction to communication channel: Transmission line-primary
and secondary line constant, telephone lines and cable, public switch
telephone network (Electronic exchange). Introduction of fiber optic
communication- Principle of light communication in fiber, losses in fiber,
dispersion, light source and photo detector, connector and splicer.
V Introduction to coding technique: Information theory, channel
capacity, Shannon’s theorem, source coding, error
control coding, error detection and correction, block code, cycle code,
line code channel throughput and efficiency.
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