Indoor event detection with eigenvector spanning signal subspace for home or office security

Shohei Ikeda, Hiroyuki Tsuji, Tomoaki Ohtsuki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

20 Citations (Scopus)

Abstract

This paper proposes an indoor event detection scheme using an electric wave such as intrusion into home or office. The proposed system exploits an antenna array on the receiver side and detects events such as intrusion using signal subspace spanned by eigenvector obtained by the antenna array. The eigenvector is not based on received signal strengths (RSS) but on the direction of arrival (DOA) of incident signals on an antenna array. Therefore, in a static state, the variance of the eigenvector over time is smaller than that of RSS. The eigenvector changes only when the indoor environment of interest changes statically or dynamically. The installation cost is low, because the detection range is wide owing to indoor reflections and diffraction of electric wave and only a pair of transmitter and receiver are used. Experimental results reveal that the proposed method can distinguish the state when no event occurs and that when an event occurs clearly. The proposed method has a superior detection performance to the event detection method based on RSS.

Original languageEnglish
Title of host publicationIEEE Vehicular Technology Conference
DOIs
Publication statusPublished - 2008
Event68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference - Calgary, AB, Canada
Duration: 2008 Sep 212008 Sep 24

Other

Other68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference
CountryCanada
CityCalgary, AB
Period08/9/2108/9/24

Fingerprint

Event Detection
Eigenvalues and eigenfunctions
Received Signal Strength
Eigenvector
Antenna Arrays
Antenna arrays
Subspace
Electromagnetic waves
Receiver
Direction of Arrival
Direction of arrival
Transmitter
Diffraction
Transmitters
Costs
Experimental Results
Range of data

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Applied Mathematics

Cite this

Indoor event detection with eigenvector spanning signal subspace for home or office security. / Ikeda, Shohei; Tsuji, Hiroyuki; Ohtsuki, Tomoaki.

IEEE Vehicular Technology Conference. 2008. 4656878.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ikeda, S, Tsuji, H & Ohtsuki, T 2008, Indoor event detection with eigenvector spanning signal subspace for home or office security. in IEEE Vehicular Technology Conference., 4656878, 68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference, Calgary, AB, Canada, 08/9/21. https://doi.org/10.1109/VETECF.2008.46
Ikeda, Shohei ; Tsuji, Hiroyuki ; Ohtsuki, Tomoaki. / Indoor event detection with eigenvector spanning signal subspace for home or office security. IEEE Vehicular Technology Conference. 2008.
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