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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.

4341102 · Semester 4 · 4G scheme

Digital Communication

Notes and solutions following the Gujarat Technological University (GTU) syllabus for 4341102. 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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    154 pages · English + ગુજરાતી

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  • Solved past papers — short answers

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Syllabus units

Unit 1: Elements of Digital Communication System10 h · 21 marks
  • Signal and Classification: Continuous time and discrete time signals, Real and complex signals, Deterministic and random signals, Even and odd signals, Energy and power signals, Singularity function, Unit step function, Unit impulse function, Unit ramp function
  • Elements of Digital Communication system with its block diagram: source, channel, transmitter and receiver
  • Communication channel characteristics: bit rate, baud rate, bandwidth, repeater distance, applications
Unit 2: Digital Modulation Techniques10 h · 21 marks
  • Amplitude Shift Keying (ASK)
  • Frequency Shift Keying (FSK)
  • Phase Shift Keying (PSK)
  • Quadrature Phase shift Keying (QPSK)
  • 8-ary PSK
  • 16-Quadrature Amplitude Modulator (QAM)
  • Minimum Shift Keying (MSK)
Unit 3: Information Theory and Coding7 h · 7 marks
  • Probability
  • Entropy and Information
  • Mutual Information
  • Channel Capacity
  • Huffman Coding and Shannon Fano coding
  • Error, types of error
  • Define error detection and list types of error detection
  • Define error correction and list common error correcting code
Unit 4: Multiplexing and Multiple Access Techniques8 h · 14 marks
  • Need and methods of multiplexing: Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), Code Division multiplexing (CDM), definition, block diagram and their comparison
  • E1 and T1- carrier multiplexing hierarchy
  • Access techniques: Need and methods - Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Code Division Multiple Access (CDMA)
Unit 5: Applications of Digital Communication7 h · 7 marks
  • Security Components: Confidentiality, Integrity and Availability, Threats, Security policy and its elements, Steps in Cracking a Network, Types of Malwares, Types of Attacks
  • Block diagram of Digital telephone exchange, elements of hardware sub systems: DLU, LTG, SN, CP
  • Form of information representation: text, audio, image and video, multimedia applications, different standard formats of audio, image and video
  • IoT - Concept, Key Features, Characteristics, Advantages and Disadvantages, Technology

About this course

Digital communication plays a vital role in the field of electronic communication systems which includes wired and wireless communications viz. telecommunication, radio, mobile and satellite communication systems. This course will enable Electronics and Communication engineering diploma engineers to maintain digital communication and networking equipment and circuits used in the practical field. This course also lays the foundation to understand the advanced communication courses in the subsequent semesters.