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 publicationThe 68th IEEE Vehicular Technology Conference, VTC 2008-Fall
DOIs
Publication statusPublished - 2008 Dec 1
Event68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference - Calgary, AB, Canada
Duration: 2008 Sep 212008 Sep 24

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252

Other

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

ASJC Scopus subject areas

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

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  • Cite this

    Ikeda, S., Tsuji, H., & Ohtsuki, T. (2008). Indoor event detection with eigenvector spanning signal subspace for home or office security. In The 68th IEEE Vehicular Technology Conference, VTC 2008-Fall [4656878] (IEEE Vehicular Technology Conference). https://doi.org/10.1109/VETECF.2008.46