Ambient intelligence sensing using array sensor: Device-free radio based approach

Jihoon Hong, Tomoaki Ohtsuki

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

14 Citations (Scopus)

Abstract

In this paper we introduce a novel device-free radio based activity recognition with localization method with various applications, such as e-Healthcare and security. Our method uses the properties of the signal subspace, which are estimated using signal eigenvectors of the covariance matrix obtained from an antenna array (array sensor) at the receiver side. To classify human activities (e.g., standing and moving) and/or positions, we apply a machine learning method with support vector machines (SVM). We compare the classification accuracy of the proposed method with signal subspace features and received signal strength (RSS). We analyze the impact of antenna deployment on classification accuracy in non-line-of-sight (NLOS) environments to prove the effectiveness of the proposed method. In addition, we compare our classification method with k-Nearest Neighbor (KNN). The experimental results show that the proposed method with signal subspace features provides accuracy improvements over the RSS-based method.

Original languageEnglish
Title of host publicationUbiComp 2013 Adjunct - Adjunct Publication of the 2013 ACM Conference on Ubiquitous Computing
Pages509-520
Number of pages12
DOIs
Publication statusPublished - 2013 Oct 15
Event2013 ACM Conference on Ubiquitous Computing, UbiComp 2013 - Zurich, Switzerland
Duration: 2013 Sep 82013 Sep 12

Publication series

NameUbiComp 2013 Adjunct - Adjunct Publication of the 2013 ACM Conference on Ubiquitous Computing

Other

Other2013 ACM Conference on Ubiquitous Computing, UbiComp 2013
CountrySwitzerland
CityZurich
Period13/9/813/9/12

Keywords

  • Activity recognition
  • Antenna array
  • Device-free sensing
  • Localization

ASJC Scopus subject areas

  • Software

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  • Cite this

    Hong, J., & Ohtsuki, T. (2013). Ambient intelligence sensing using array sensor: Device-free radio based approach. In UbiComp 2013 Adjunct - Adjunct Publication of the 2013 ACM Conference on Ubiquitous Computing (pp. 509-520). (UbiComp 2013 Adjunct - Adjunct Publication of the 2013 ACM Conference on Ubiquitous Computing). https://doi.org/10.1145/2494091.2497609