Collaborative filtering for position estimation error correction in WLAN positioning systems

Shigeaki Tagashira, Yuhei Kanekiyo, Yutaka Arakawa, Teruaki Kitasuka, Akira Fukuda

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


A critical problem with wireless LAN-based positioning systems is the degradation in position estimation accuracy due to complex variation in the strength of the received signal, which originates in the na-ture of the underlying wireless channel. Handling such variation effectively is essential for the creation of practical wireless LAN-based positioning systems. In this paper, we propose a collaborative mechanism for correct-ing position estimation errors. The main objective is to assist users in cor-recting estimation errors manually by providing access to a shared body of accumulated information on corrections made by many other users. In particular, the mechanism is designed to enable any group of users to col-laboratively build upon this body of information. Finally, we evaluate the effectiveness of the proposed mechanism through experiments. The results confirm that the proposed mechanism can provide effective estimation error correction in a realistic environment.

Original languageEnglish
Pages (from-to)649-657
Number of pages9
JournalIEICE Transactions on Communications
Issue number3
Publication statusPublished - Mar 2011

All Science Journal Classification (ASJC) codes

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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