CHHATTISGARH SWAMI VIVEKANAND TECHNICAL UNIVERSITY BHILAI (C.G.)
Semester : V Branch: Information Technology.
Subject: Principles of Communication Systems
UNIT – I : Amplitude Modulation System
Need for Modulation, Amplitude Modulation, Amplitude Modulation Index, Modulation Index for
Sinusoidal AM, Frequency spectrum for Sinusoidal AM, Average power for Sinusoidal AM, Effective
voltage and current for sinusoidal AM, Balanced Modulator, The Square law demodulator,
Nonsinusoidal modulation, DSBSC Modulation, SSB modulation and generation, VSB, FDM.
UNIT – II : Angle Modulation System
Phase and frequency modulation and their relationship. Frequency deviation, spectrum of FM Signal,
BW of FM Signal, Effect of modulation on BW, constant BW, FM phasor diagram, Narrow band F.M.
Armstrong and Parameter variation methods of FM generation and FM demodulators.
UNIT – III : Digital Communication
Sampling theorem, Pulse Modulation: PAM, PPM, PWM. Quantization of Signals, Quantization error,
Pulse Code Modulation (PCM) and the system, Time division multiplexing (TDM), DPCM, DM,
ADM,PSK FSK and DEPSK.
UNIT – IV : Elements of Information Theory
Average Information, Entropy, Information Rate. Communication Channel. Discrete and Continuous
channel, Shannon-Hartley Theorem and its Implications, Channel capacity, Gaussian channel.
Bandwidth s/N trade off.
UNIT – V : Advanced Communication Techniques
Satellite Communication: Components and Block diagram of Satellite communication system,
Transponders, Up-link and Down-link budget calculations.
Fiber Optic Communication: Principles of light propagation in optical fiber, Losses in fibers, Dispersion,
Connectors and splices, Fiber optic communication link.
1. Electronic Communications by Roddy & Coolen, PHI.
2. Electronic Communication System by Kenedy & Davis, TMH
1. Principles of Communication system by H.Taub and K.L. Shiling.
2. An Introduction to the Principle of Communication Theory by J.C. Hancock,Mc-Graw Hill.
3. Signal Processing, Modulation and Noise -by Betts, English University Press,London.