Digital Communication
Grade, SemesterYear 3 II/IV [Department of Information Science Correspondence Course, Faculty of Science and Engineering]
CategorySpecial Subjects
Elective, CreditsElective 2credit
 Syllabus Number4F303

Course Description

The aim of the class is student be able to understand the basic technology of transmitting information by digital signals. It will be learned about Fourier transform, which is important in signal processing, digital modulation and demodulation, which are important in digital communication technology, and optical fiber technology that supports high-speed, large-capacity communication.
Specifically, we will acquire necessary skills and knowledge on DP2 and DP4.

Course Objectives

1. Students be able to explain the outline of digital communication and typical technologies.
2. Students be able to represent the signals used for digital communication in the frequency domain and the time domain.
3. Students be able to explain the characteristics of typical digital modulation and demodulation.
4. Students be able to explain fiber optic transmission used in optical communication.

Grading Policy

Those who pass both the reports [Report A] and [Report B] will be eligible to take the test. Grades will be evaluated by the test.
It will be provided feedback (understanding the content and pointing out insufficient points as technical sentences) by correcting the report assignment.

Textbook and Reference

TextbookClasses are conducted with textbooks and subtexts. Subtext will be uploaded to LMS.
Textbook(ISBN-13: 978-4339007909) in Japanese.Hatori, Sugawara, Yatugi, Kobayashi and IzumiCORONA PUBLISHING CO.,LTD.


Follow the instructions posted in the lesson content to study.
It will expected about 4.5 hours for each lesson study, study of related matters and exercises.


In the test, examinee can bring textbooks, study notes, assignment reports, and scientific calculators. But examinee will couldn't pass the answer by reading the textbook during test. Therefore, examinee need a well prepared for the test.
This lesson uses calculus and Euler's formulas. Please reinforce the mathematics if necessary.


1Digital communications and signal analysis 1: Fourier series by trigonometric function
2Signal analysis 2: Fourier series by complex exponential function
3Signal analysis 3: Fourier transform essential for understanding communication technology
4Signal analysis 4: properties of the Fourier transform used in digital communication
5Signal analysis 5: periodic function representing the nature of a signal
6Signal analysis 6: Fourier series expansion of periodic functions
7Cording of information: digitization
8Digital modulation 1: overview of phase shift keying
9Digital modulation 2: binary phase shift keying
10Digital modulation 3: differential phase shift keying
11Optical fiber 1: light propagation by optical fiber and type of optical fiber
12Optical fiber 2: optical communication system
13Optical fiber 3: loss limit and variance limit
14Review 1: review the issues pointed in the returned [ Report A]
15Review 2: review the issues pointed in the returned [ Report B]