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Analog Communication System

 

This is a companion laboratory to Communication System – Theory. It covers: fundamental elements of communications systems hardware; use of cathode ray oscilloscope and other measurement instruments typically encountered in communication systems; analog frequency and amplitude modulators and demodulators; Pulse modulator and demodulators. Emphasis is on devices, circuits, methods and meausurements and on Simulators. Practical demonstration of the theoretical concepts done in classrooms will enhance the understanding of the students.

The students are provided with a comprehensive Lab Manual, which is almost self explanatory. All the experiments are well documented with clear circuit diagrams, block diagrams, theory and procedures involved, so that the students are able to perform the experiments with ease and proper understanding.

The lab is equipped with CRO, Signal generator, Amplitude Modulation & Demodulation Kit, Frequency Modulation & Demodulation Kit, Pulse Width Modulation & Demodulation Kit, Pulse Amplitude Modulation & Demodulation Kit, Pulse Code Modulation & Demodulation Kit, Pulse Position Modulation & Demodulation Kit, FSK Modulation & Demodulation Kit, PSK Modulation & Demodulation Kit, Digital TD Multiplexing & Demultiplexing and Delta Modulation & Demodulation kit.

 

List of Experiments

  • To study the Amplitude Modulation and Demodulation.
  • To Study the Frequency Modulation and Demodulation.
  • To Study the Pulse Amplitude Modulation and Demodulation.
  • To Study the Pulse Width Modulation and Demodulation.
  • To Study the Pulse Position Modulation and Demodulation.
  • To Study Time Division Multiplexing and Demultiplexing
  • To Study the Pulse Code Modulation and Demodulation.
  • To Study the Delta Modulation and Demodulation
  • To Plot and learn how the Characteristics of Pre-emphasis and De-emphasis differ from each other.
  • Familiarization with Spectrum Analyzer

Value Added Experiments

  • Real Time Amplitude Modulation and Demodulation using Virtual Labs
  • Simulation of Frequency Modulation using Virtual Labs
  • Simulation of Amplitude Modulation using Virtual Labs
  • To measure frequency and amplitude of given unknown signal using Spectrum Analyzer.

·         Familiarization with Qualnet 4.5 Simulation tool.