Methods for improving IMES transmitters: Transmission diversity, variable beamwidth antenna, and leaky coaxial cable

Kenjiro Fujii, Takamasa Kawaguchi, Hisanori Matsumoto, Makoto Tanikawara, Takashi Toyama, Yoshihiro Sakamoto, Wei Wang, Hiroaki Arie, Alexander Schmitz, Shigeki Sugano

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

    3 Citations (Scopus)

    Abstract

    IMES is an indoor messaging and positioning system. In the present work, three methods for improving the IMES transmitter are proposed based on the result of a radio acquisition analysis: Transmission diversity, a variable beamwidth antenna, and a leaky coaxial cable (LCX). The transmission diversity method increases the possibility of signal acquisition in areas with weak signal. A small-sized variable beamwidth antenna is developed to mitigate the multipath interference in narrow spaces. A field experiment with a LCX in an actual train setup is conducted to verify the effect of the LCX for the positioning of moving vehicles. The evaluation results of the proposed methods suggest their potential to be applied to practical applications.

    Original languageEnglish
    Title of host publication2015 IEEE/SICE International Symposium on System Integration, SII 2015
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages326-331
    Number of pages6
    ISBN (Print)9781467372428
    DOIs
    Publication statusPublished - 2016 Feb 10
    Event8th Annual IEEE/SICE International Symposium on System Integration, SII 2015 - Nagoya, Japan
    Duration: 2015 Dec 112015 Dec 13

    Other

    Other8th Annual IEEE/SICE International Symposium on System Integration, SII 2015
    CountryJapan
    CityNagoya
    Period15/12/1115/12/13

    ASJC Scopus subject areas

    • Artificial Intelligence
    • Control and Systems Engineering

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  • Cite this

    Fujii, K., Kawaguchi, T., Matsumoto, H., Tanikawara, M., Toyama, T., Sakamoto, Y., Wang, W., Arie, H., Schmitz, A., & Sugano, S. (2016). Methods for improving IMES transmitters: Transmission diversity, variable beamwidth antenna, and leaky coaxial cable. In 2015 IEEE/SICE International Symposium on System Integration, SII 2015 (pp. 326-331). [7404941] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SII.2015.7404941