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4G curriculum (older)

For students clearing pending subjects of the 4G scheme (7-digit subject codes, e.g. 4341602). Students admitted under the current scheme study the 5G curriculum.

4331104 · Semester 3 · 4G scheme

Principles of Electronic Communication

Notes and solutions following the Gujarat Technological University (GTU) syllabus for 4331104. Independent material — not issued by the university.

Electronics & Communication Engineering

Materials

Syllabus

The official syllabus this material follows.

  • Syllabus

    10 pages

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Complete Book

The whole syllabus, unit by unit, written for the exam.

Problem Solver

Step-by-step solutions to typical problems.

PYQ Solutions

Past university papers, fully solved.

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Syllabus units

Unit 1: Basics of Communication System6 h · 10 marks
  • Electromagnetic (EM) wave spectrum, frequency bands and their applications domain
  • Signals and its representation: analog and digital Signal, Pulse, Impulse, Saw-tooth, sinusoidal and rectangular (In Time & frequency domain)
  • Block diagram of Analog and Digital communication system
  • Modulation: Definition & its classification based on analog & pulse signal as carrier. Concept of digital modulation
  • Noise in communication system, classification of noise, signal to noise ratio(S/N) and noise figure
Unit 2: Analog Modulation Techniques11 h · 18 marks
  • Mathematical expression, waveform and frequency spectrum for the Double sideband full carrier (DSBFC) Amplitude Modulated wave
  • Modulation Index, carrier power, modulated signal power and modulation index
  • DSBSC and Single sideband (SSB) frequency spectrum, bandwidth
  • Power saving in SSB
  • DSBSC signal using balanced modulator circuit.
  • Mathematical representation of FM wave, waveforms, Frequency spectrum, Modulation index and Bandwidth of FM
  • Mathematical representation of PM and its waveform
  • Compare AM and FM
  • Pre-emphasis and De-emphasis
  • Generation techniques for FM wave : Phase locked loop FM modulator
  • Pulse Modulation techniques: PAM,PWM, PPM
Unit 3: Analog Receivers8 h · 11 marks
  • Characteristic of radio receiver, Sensitivity, Selectivity, Fidelity, Image frequency rejection
  • Block diagram and working of super heterodyne receiver, IF selection, Image frequency
  • Envelope detector using diode
  • Block diagram of basic FM receiver
  • Basics and types of FM demodulators
  • FM demodulator using Phase Locked Loop
Unit 4: Sampling theory and waveform coding11 h · 21 marks
  • Statement and proof of sampling theorem
  • Nyquist rate and interval
  • Aliasing error, under sampling, over sampling and critical sampling
  • Ideal, Natural and flat top sampling
  • Concept of Quantization
  • Classification of quantization
  • PCM transmitter and receiver
  • Advantage, disadvantage and application of PCM
  • Block diagram, waveforms, advantage of Delta Modulation
  • Disadvantage of DM (slop overload and Granular noise)
  • Adaptive Delta Modulation
  • Differential PCM
  • Comparison between PCM, DM, ADM and DPCM
Unit 5: Line Coding and Multiplexing6 h · 10 marks
  • Bit rate, Baud rate, symbol
  • Line coding techniques
  • Concept of Time division digital multiplexing, TDM frame
  • Block diagram of basic PCM-TDM system

About this course

Students of diploma electronics and communication engineering need to have a thorough understanding of fundamental concepts of Electronics and Communication. Diploma students undertaking this course are expected to apply the fundamentals of basic electronic communication system to analyze the different communication (Modulation and Demodulation) methods with its techniques, this basic course develop skills required to learn communication to meet the expectations of the industry.