4G curriculum (older)
1333201 · Semester 3 · 4G scheme
Communication Engineering
Notes and solutions following the Gujarat Technological University (GTU) syllabus for 1333201. Independent material — not issued by the university.
Materials
Complete Book
The whole syllabus, unit by unit, written for the exam.
Complete Book
288 pages
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Problem Solver
Step-by-step solutions to typical problems.
Problem Solver
26 pages
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PYQ Solutions
Past university papers, fully solved.
Solved past papers — detailed answers
203 pages · English + ગુજરાતી
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105 pages · English + ગુજરાતી
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Syllabus units
Unit 1: Analog Modulation Techniques10 h · 16 marks
- Block diagram of Analog and Digital communication system
- Modulation: Definition & its classification based on analog & pulse signal as carrier
- Mathematical Expression
- Draw waveform, frequency spectrum for DSBFC and SSBSC Amplitude Modulated wave
- Modulation Index, carrier power, modulated signal power and modulation index and Power saving in SSB
- Mathematical representation of FM wave Modulation index and Bandwidth of FM and Show waveforms, Frequency spectrum
- Definition of phase modulation
- Compare AM and FM
Unit 2: Analog Receivers6 h · 10 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
- Principal of FM demodulators
Unit 3: Pulse Modulation Techniques & Sampling Theory10 h · 14 marks
- Signals and its representation: analog and digital Signal, Pulse, Impulse, Saw-tooth, sinusoidal and rectangular (In Time & frequency domain)
- Statement 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
- Pulse Modulation techniques, definition and waveform: PAM, PWM, PPM
Unit 4: Waveform Coding & Multiplexing10 h · 20 marks
- 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
- Concept of Time division digital multiplexing, TDM frame
- Block diagram of basic PCM-TDM system
Unit 5: Antenna and Wave Propagation6 h · 10 marks
- Electromagnetic (EM) wave spectrum, frequency bands and their applications domain
- Definition: Antenna, Radiation of wave, radiation Pattern, isotopic Antenna, Polarization, Directivity and Gain
- Dipole Antenna, Parabolic reflector antenna, Micro strip (patch) antenna
- Base station antennas, Mobile station antennas
- Smart Antenna need and applications
- Space Wave propagation: Tropospherescattered propagation, Duct Propagation, Ground Wave propagation
About this course
Students of diploma Information and Communication Technology Engineering need to have a thorough understanding of fundamental concepts of Communication Engineering. 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, various antenna for specific application this basic course develop skills required to learn communication to meet the expectations of the industry.