Department of Computer Science and Engineering

B.Tech. II (CO) Semester - 4

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EC208: COMMUNICATION SYSTEM (IS-I)

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COURSE OBJECTIVES
  • Introduce students to the fundamentals of Signal Processing, Communication, and Information Theory.
  • Provide an insight into time domain and frequency domain analysis of continuous-time signals, and provide an insight into the sampling process and properties of the resulting discrete-time signals.
  • Introduces the students to basic communication modulation techniques, as well as probability theory for analysing random signals.
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    COURSE OUTCOMES
    After successful completion of this course, student will be able to
    • Understand the need of modulation in transferring a signal through either wireless or wired communication systems.
    • Apply analog modulation techniques and receiver fundamentals in analog communication.
    • Apply baseband digital encoding & decoding techniques in the storage / transmission of digital signal through wired channel.
    • Understand the performance of communication systems in the presence of noise and interference.

    COURSE CONTENT

    Introduction

    (02 Hours)

    History, Concept of Transmitter, Receiver, Channel, Noise, Modulation, need for modulation, Types of Modulation, Different communication systems based on Input and Output.
    Amplitude Modulation (AM)

    (08 Hours)

    AM, AM Index, Frequency spectrum, Average Power for Sinusoidal AM, Effective Voltage and Current, Non sinusoidal Modulation, DSBFC & DSBSC Modulation, Amplitude modulator and Demodulator Circuits, AM Transmitters.
    Single-Sideband (SSB) Modulation

    (06 Hours)

    SSB Principles, Balanced Modulators, SSB Generation and Reception.
    Angle Modulation

    (06 Hours)

    Frequency Modulation (FM), Frequency spectra, Average power, Deviation Ratio, Measurement of Modulation Index, Phase Modulations (PM), Sinusoidal PM, Digital PM, Angle Modulator Circuits, FM Transmitters, Angle Modulations Detectors.
    Pulse Modulation

    (08 Hours)

    Pulse Amplitude Modulation, Pulse Code Modulation, Delta Modulation, Pulse Frequency Modulation, Pulse Time Modulation, Pulse Position modulation and Pulse Width Modulation.
    Digital Communication

    (06 Hours)

    Introduction, Digital Carrier Systems ASK, FSK, QAM, BPSK, QPSK Transmitter and receiver block diagrams.
    Fiber-Optic Communications

    (06 Hours)

    Principles of Light Transmission in Fiber Losses in Fibers, Dispersion, Light Sources and Detectors for Fiber Optics.
  • Tutorials will be based on the coverage of the above topics separately

    • (14 Hours)

    (Total Contact Time: 42 Hours + 14 Hours = 56 Hours)
    PRACTICALS
    1. AM modulation/demodulation
    2. SSB & DSBSC modulation
    3. FM modulation
    4. PAM,PTM,PPM
    5. PCM modulation
    6. Delta modulation
    7. ASK,FSK
    8. BPSK,QPSK
    BOOKS RECOMMENED
    1. Dennis Roddy & John Coolen: "Electronic Communications", PHI, 4/E, 1995.
    2. George Kennedy : "Electronic Communication Systems", 3/E,  McGraw Hill Book Co., 1993.
    3. Simon Haykin : "Communication Systems", 2/E, Wiley Eastern Ltd, 1994.
    4. Taub and Schilling: "Principles of communication Systems". Mc, Graw Hill Publication, 1992.
    5. B.P.Lathi :"Modern digital and analog communication systems". Holt, Sounders Pub. 1998