Effects of spatial correlation between signal subspaces on indoor localization using subspace matching

Shohei Ikeda, Hiroyuki Tsuji, Tomoaki Ohtsuki

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

4 Citations (Scopus)

Abstract

We present experimental results about a spatial correlation between signal subspaces on indoor localization using a subspace matching. An eigenvector spanning signal subspace is used in the subspace matching. The eigenvector is based on not received signal strengths (RSS) but direction of arrival (DOA) of incident signals on an antenna array, and is unique to the location of the transmitter terminal. To estimate the location of the transmitter terminal, we use the magnitude of inner product between the eigenvector obtained by observation and that obtained in advance at each reference location in the database. The spatial correlation between signal subspaces influences the localization accuracy. Subspace matching localization requires high spatial correlation between neighborhood signal subspaces. In this paper, we evaluate the spatial correlation between signal subspaces by obtaining the eigenvectors at the fine-grid locations in an actual indoor environment. Experimental results show that, because the high spatial correlation between signal subspaces is quite local, the localization accuracy of subspace matching is high only when the database is constructed such that the distance between the adjacent reference locations is short.

Original languageEnglish
Title of host publicationTENCON 2007 - 2007 IEEE Region 10 Conference
DOIs
Publication statusPublished - 2007 Dec 1
EventIEEE Region 10 Conference, TENCON 2007 - Taipei, Taiwan, Province of China
Duration: 2007 Oct 302007 Nov 2

Publication series

NameIEEE Region 10 Annual International Conference, Proceedings/TENCON

Other

OtherIEEE Region 10 Conference, TENCON 2007
CountryTaiwan, Province of China
CityTaipei
Period07/10/3007/11/2

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering

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  • Cite this

    Ikeda, S., Tsuji, H., & Ohtsuki, T. (2007). Effects of spatial correlation between signal subspaces on indoor localization using subspace matching. In TENCON 2007 - 2007 IEEE Region 10 Conference [4429012] (IEEE Region 10 Annual International Conference, Proceedings/TENCON). https://doi.org/10.1109/TENCON.2007.4429012