DI04000131 · Semester 4 · 5G scheme
Digital & Data Communication
Notes and solutions following the Gujarat Technological University (GTU) syllabus for DI04000131. Independent material — not issued by the university.
Electronics & Communication EngineeringInformation & Communication Technology
Materials
Complete Book
The whole syllabus, unit by unit, written for the exam.
Complete Book
97 pages
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PYQ Solutions
Past university papers, fully solved.
Solved past papers — detailed answers
29 pages · English + ગુજરાતી
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Syllabus units
Unit 1: Introduction to Digital and data communication System
- Elements of Digital Communication system with its Block diagram: Source, Channel, Transmitter, Receiver, Repeater.
- Communication channel characteristics: bit rate, baud rate, bandwidth, Repeater distance
- Communication channel types: telephone channels co-axial channels, optical fiber cables, wireless broadcast channel, satellite channel
- Multiplexing - Need and methods of multiplexing: Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), Code division multiplexing (CDM) block diagram and their comparison
- Fundamental limitation of digital communication system- Noise, bandwidth and equipment
- Advantages and disadvantages of digital communication System.
Unit 2: Digital Modulation Techniques
- Amplitude Shift Keying (ASK) - Generation, reception, bandwidth, constellation diagram, waveforms, advantages and disadvantages
- Frequency Shift Keying (FSK) - Generation, reception, bandwidth, constellation diagram, waveforms, advantages and disadvantages
- Phase Shift Keying (PSK) -Generation, reception, bandwidth, constellation diagram, waveforms, advantages and disadvantages
- Quadrature Phase Shift Keying (QPSK)- Generation, reception, bandwidth, constellation diagram, waveforms, advantages and disadvantages
- Comparison of ASK, FSK, PSK and QPSK
- Quadrature Amplitude Modulation (QAM) - Principle, constellation diagram, waveforms, advantages and disadvantages
Unit 3: Information Theory and Coding
- Basic definition of probability, properties of probability, conditional probabilities, probability of statistically independent events
- Entropy and Information
- Mutual Information
- Channel Capacity
- Source coding techniques- need of source coding techniques, Huffman Code, Shannon - Fano code
- Channel coding: introduction to Error in communication, causes and its effect of error, error detection & correction techniques: parity check, checksum, Hamming Code, Cyclic Redundancy Check (CRC).
- Line Coding Techniques- properties of Line code, selection criteria of line codes, classification of line codes- Unipolar RZ and NRZ, Polar RZ and NRZ, Bipolar NRZ(AMI)
Unit 4: Data Communication: techniques and standards
- Data Communication: Characteristics and Components of Data Communication
- Data transmission mode: simplex, half duplex, full duplex
- Data transmission techniques: I. Serial data communication: synchronous and asynchronous II. Parallel data communication
- Switching techniques: circuit switching, message switching and packet switching.
- Data representation: Audio, Video, Picture, text data Sensor data and streaming data formats
- Multimedia Communications: Multimedia Communication Model, important Elements of Multimedia Systems
- Multimedia processing for communication: digital media, signal processing elements, digital audio file formats, digital image file formats, digital video file formats, compression standards MP3, AAC, JPEG, MPEG, streaming codes.
- Modern communication standards -Ethernet standards, Wi-fi standards, Bluetooth standards, 3.5mm audio and Ethernet
Unit 5: Emerging trend in Data communication
- Edge Computing
- Block chain in Communication Security
- Ethical and Privacy Considerations in Data Communication
- AI-driven Networks: Intelligent traffic management, self- optimizing and self-healing communication systems
- Green Communication: Energy-efficient networking and sustainable infrastructure
About this course
Study materials, question papers, and solutions for Digital & Data Communication (DI04000131) - Diploma Engineering, Semester 4