Name of Subject  : ANALOG AND DIGITAL COMMUNICATION ( 4 IT 6.3)

Unit

Contents

Modulation of Signals: Principles of Analog modulation technique like AM, FM, PM, SSB, Generation & detection.

I

Frequency division multiplexer. Pulse modulation: Pulse transmission over band-limited signals, sampling theory,

pulse amplitude modulation.

Digital Communication: PCM, DCSM, DM, ADM, comparison of above systems on the basis of performance

II

criteria such as bit transmission, signaling rate, error probability, S/N ratio, bandwidth requirement. ISI & Eye

diagram.

Digital Modulation technique: Data transmission using techniques such as PSK, FSK, QFSK (QAM), MSK Inter

III

system comparison.

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-

IV

Principle of light communication in fiber, losses in fiber, dispersion, light source and photo detector, connector and

splicer.

Introduction to coding technique: Information theory, channel capacity, Shannon’s theorem, source coding, error

V

control coding, error detection and correction, block code, cycle code, line code channel throughput and efficiency.