Course Name

    ET 3002 – Digital Communications

  1. Instructors Information

    Dr. M. Sigit Arifianto,

    Radio Telecommunication & Microwave Laboratory,

    Tel: +62222501661, email:

  1. Prerequisites:

    Course Prerequisite: ET 3001 (Analog and Digital Communication Systems)

  1. Instructor Assistance (Office Hours)

    Wednesday, 10:00-12:00

    Thursday, 10:00-11:00


  1. Class Hours

    Wednesday, 09:00-09:50

    Thursday, 07:00-08:40



  1. Text Book(s)

    E. Ziemer and W. H. Tranter, Principles of Communications: Systems, Modulation, and Noise, 6th Ed., Wiley, 2010

    E. Blahut, Modem Theory: An Introduction to Telecommunications,  Cambridge University Press, 2010

    Haykin, Communication Systems, 4th Ed., Wiley, 2001

  2. Course Description

    Random process and noise modeling, baseband transmission, signal space analysis, passband digital transmission, synchronization, channel coding, intro. to spread spectrum, intro. to orthogonal frequency division multiplexing.

  3.  Specific Goal for the Course

    • Course Learning objectivesAfter successfully completing the course, the students will be able to:
      • Demonstrate understanding of random process, Additive White Gaussian Noise (AWGN) and its application in digital communications performance analysis.
      • Calculate and analyze performance of integrate-and-dump detector, matched filter, correlator.
      • Recognize the cause of intersymbol interference (ISI) and its effects on the detection process. Apply conditions for Zero ISI and equalization to minimize ISI as the solution for the ISI problem.
      • Demonstrate understanding of signal space analysis and its application to calculate and analyze performance of digital communications along with maximum likelihood principles. Explain methods of generation and detection of ASK, PSK (binary and multilevel), FSK, APSK, and calculate their performance.
      • Explain methods of generation and detection of MSK and differentially encoded PSK.
      • Explain carrier recovery methods for PSK signals. Explain fundamentals of symbol timing recovery
      • Explain minimum distance decoding using calculation of Hamming distance. Illustrate and demonstrate mechanisms of parity check codes, Hamming codes, and cyclic codes. Explain trellis diagrams, illustrate and demonstrate mechanisms of Viterbi algorithm.
      • Calculate coding gain.
        • Explain mechanism of generation and detection of spread spectrum signals. Identify advantages and disadvantages of spread spectrum.
        • Explain mechanism of generation and detection of OFDM signals.
      • Identify advantages and disadvantages of OFDM.
        • Apply software to simulate and analyze digital communications problems
    • Relationship of course to student outcomesThe course supports program outcomes 1, 5, 11 as required by ABET Criterion 3 of EAC (Engineering Accreditation Commission).

      Outcome 1: apply knowledge of mathematics, science, and engineering [ABET Criterion 3 a].

      Outcome 5: identify, formulate, and solve engineering problems [ABET Criterion 3 e].

      Outcome 11: Use the techniques, skills, and modern engineering tools necessary for engineering practice [ABET Criterion 3 k].

  4.  Brief List of Topics to be Covered

    • Random process and noise modeling: description of random process, statistical charcteristics, stasionary process, transmission of random process over a liniear system, AWGN
    • Baseband transmission: performance calculation, error probability in integrate-and-dump receiver, detection using matched filter and correlator, intersymbol interference (ISI), eye pattern, Nyquist criterion, raised cosine, baseband equalization, M-ary PAM
    • Signal space analysis: signal space and performance calculation
    • Passband digital transmission: binary ASK and binary PSK, methods for coherent and non-coherent detection, multilevel PSK, hybrid digital modulation APSK (amplitude/phase shift keying), FSK, MSK, differential encoding and modulation (binary and multilevel)
    • Synchronization: carrier synchronization, symbol synchronization, and frame synchronization
    • Channel coding: Hamming distance, Intro. to block codes and convolutional codes
    • to spread spectrum: DSSS, FHSS
    • to orthogonal frequency division multiplexing: multi-carrier modulation (MCM); OFDM, MCM, and FFT
  1. Tentative Class Schedule and Topics

    Topics HW/Test Reading Textbook
    Week 1 Random process and noise modeling [Ziemer &Tranter, Ch. 5]
    Week 2 Random process and noise modeling A1 [Ziemer &Tranter, Ch. 6]
    Week 3 Baseband transmission [Ziemer &Tranter, Ch. 4 & 8]
    Week 4 Baseband transmission HW1, ST1 [Ziemer &Tranter, Ch. 4 & 8]
    Week 5 Baseband transmission A2 [Ziemer &Tranter, Ch. 4 & 8]
    Week 6 Signal space analysis [Ziemer &Tranter, Ch. 8 & 9]
    Week 7 Passband digital transmission HW2 [Ziemer &Tranter, Ch. 8 & 9]
    Week 8 Mid-Exam I ST2
    Week 9 Passband digital transmission [Ziemer &Tranter, Ch. 8 & 9]
    Week 10 Passband digital transmission [Ziemer &Tranter, Ch. 8 & 9]
    Week 11 Synchronization HW3, A3, ST3 [Ziemer &Tranter, Ch. 9]
    Week 12 Channel coding [Ziemer &Tranter, Ch. 11]
    Week 13 Channel coding HW4, A4, ST4 [Ziemer &Tranter, Ch. 11]
    Week 14 Intro. to spread spectrum [Ziemer &Tranter, Ch. 9]
    Week 15 Intro. to orthogonal frequency division multiplexing HW5, ST5 [Ziemer &Tranter, Ch. 9]
  1. Grading Policy:



    5% 60%
    Homeworks 5%
    Small Tests 15 %
    Mid-Exam 35%
    Final Exam   40%
  1. Course Policies

    Each student is expected to attend all of the scheduled classes.

    Student ethics is important (see point no.12). During evaluations (e.g. tests, exams, individual projects, and individual assignments/homework) students must comply with academic and professional honesty. Any breach of integrity will be taken seriously and reported to the appropriate higher authority.


  1. Ethics of a Student as Community Member

    According to the Academic Regulations of ITB, Chapter II Student Ethics at the Institut Teknologi Bandung, First part, Article 3, students of ITB must be able to manifest the spirit of upholding academic and professional honesty and integrity by restraining from dishonest and unfair acts in any form, both inside and outside of the campuses.


Section 1
Final Quiz