Signal Transmission and Detection Theory

Takaya YAMAZATO Professor

Department: School of Engineering / Graduate School of Engineering

Class Time: 2012 Spring Tuesday
Recommended for: Graduate students of Electrical Engineering and Computer science Course

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Course Objectives

The purpose of wireless sensor network (WSN) is to monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, motion or pollutants by spatially distributed autonomous sensors.

Not just giving to advance sensing, WSN has a potential to create a new paradigm of information society. Also, WSN has a potential to become a fundamental technique of society. Various applications of WSN are expected. Such includes the rescue operation at a disaster, an environmental measurement, security, an intelligent space and amusements, etc. WSN is built of sensor nodes, connected to one another and passes the sensed data cooperatively through the network to a fusion center. What makes WSN different from ordinary wireless network is that the sensor node is unstable, uncertain and sometimes it has severe constrains. The design of WSN is therefore taken these into an account and makes it effective.

The objective of this course is to give a fundamental theory and technique of WSN.

Key Features

This lecture is alternatively taught in the every other year with Professor Masaaki Katayama. When my turn comes to take charge of the lecture, I teach WSN.

Theory of WSN covers, sensing theory, communication and networks, distributed sensing theory, signal processing, control theory, system theory and more. In this lecture, I mainly focus on signal processing and detection theory, communication and network theory. I try to organize to teach only the essence of those theories and try not to give every detail. Students will be asked to read the original papers of WSN for deeper understanding and write reports about them. I also present brief survey of current research trend of WSN to draw students' attentions.

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Course Aims

  1. To introduce the fundamentals of WSN and students can explain feature, technical problem and the trend of WSN.
  2. To introduce the distributed detection and students can explain it.
  3. To introduce the capacity of WSN and students can explain it.
  4. To introduce the protocol of WSN and students can explain it.

Recommended Courses

It is highly recommended that you take the courses "Transmission System Engineering", "Information & Communications Engineering 1", "Information & Communications Engineering 2", and "Information & Communications Engineering 3" beforehand.

Course Schedule

Chapter1: Overview

Session Contents
1 Ubiquitous and wireless sensor network(WSN)
2 Feature of WSN, technical problem and its trend

Chapter2: The signal processing and detection theory in WSN

Session Contents
3 Expression and analysis of observation space
4 Distributed detection and sensor fusion
5 Kalman filters and particle filters
6 Distributed detection and Kullback–Leibler divergence (information gain)

Chapter3: The signal transmission in WSN

Session Contents
7 Expression of transmission signal
8 The signal transmission in WSN
9 Channel capacity
10 Network capacity
11 Network information theory

Chapter4: Realization of WSN

Session Contents
12 Protocols of WSN
13 Platform of WSN
14 Applications of WSN1
15 Applications of WSN2


  • Students are required to achieve objectives written in course targets.
  • Evaluation will be given based on reports and assignments.
  • It is required to get more than 55% to get credits from this course.

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Reports and Assignments

Assignments 1
WSN are considered as the fundamental technology to realize ubiquitous society. However, it is yet to become widespread. Arrange to the report concerning why sensor network does not spread; and give examples of the technical issues for spreading.
Assignments 2
Read the following article on WSN and arrange to the report concerning the trend of WSN.
  • I. Akyildiz, W. Su, Y. Sankarasubramaniam, and E. Cayirci, "A Survey on Sensor Networks," IEEE Communications Magazine, Vol. 40, no. 8, pp. 102-114, Aug. 2002
Assignments 3
Read the following paper on Kalman filter and arrange to the report concerning the Kalman filter.
Assignments 4
Arrange to the report concerning the Slepian-Wolf source coded theorem.
Assignments 5
Arrange to the report concerning Energy Harvesting in WSN.

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Page last updated September 15, 2011

The class contents were most recently updated on the date indicated. Please be aware that there may be some changes between the most recent year and the current page.

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