ANALOG AND DIGITAL COMMUNICATION SYLLABUS

UNIT I: Amplitude Modulation
Need of amplitude modulation, Amplitude modulation, power relation. AM wave, generation of AM,
balanced modular signal side band technique, suppression of unwanted sideband, side band
transmission, demodulation, envelop detector, synchronous detector, noise in amplitude modulation
system.
UNIT II: Angle Modulation
Mathematical equation of frequency modulation (FM), frequency spectrum, phase modulation (PM),
relationship between PM and FM, pre-emphasis and de-emphasis, adjacent channel interference,
comparison of narrow band and wide band FM, noise in angle modulation system, generation of FM,
reactance modulator, frequency division multiplexing.
UNIT III: Pulse Modulation System
Pulse width modulation, pulse position modulation (PPM), pulse code modulation, sampling, Quantization
of signals, time division multiplexing.
UNIT IV: Digital Modulation Techniques
Introduction, Digital modulation formats, types of digital modulation techniques, Coherent binary
modulation techniques, BPSK, Coherent BFSK, Non coherent binary modulation techniques, Non
coherent binary ASK, DPSK, QPSK, MSK, comparison of different techniques.
Wave form coding Techniques, Discretisation in time and amplitude, Quantization, PCM, PCM generator,
Quantizer, Transmission band width in PCM, PCM receiver, quantization noise/error in PCM, companding
in PCM, Delta modulation, Adaptive delta modulation, DPCM, comparison of different DPM methods.
UNIT V Information Theory
Introduction, Sources of information, Contents in DMS, Contents of a symbol, Entropy, Information rate,
Discrete memory less channel, Conditional joint entropies, mutual information, Channel capacity, Active
white Gaussian channel, Source coding, Entropy coding, introduction to error control coding like Parity
codes, Linear block codes, Hamming code and convolution codes.
Text Books:
1. “Electrical Communication Systems”, Kennedy, TMH
2. “Digital Communications” Sanjay Sharma, S.K. Kataria & Sons, New Delhi
3. “An Introduction To Analog And Digital Communication”, Haykins, Wiely Pbs
Reference Books:
1. Analog and digital communication, Roden, PHI pbs.
2. Communication engineering,Singh & Sapre PubTMH Pbs