Principles of Communication SystemsUploaded by: MYcsvtu Notes
Uploaded by: MYcsvtu Notes
Uploaded by: MYcsvtu Notes
Uploaded by: MYcsvtu Notes
Uploaded by: MYcsvtu Notes
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Principles of Communication Systems SyllabusUNIT – 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. |