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    RSS-based Indoor Positioning Accuracy Improvement Using Antenna Array in WLAN Environments

    189580_189580.pdf (1.019Mb)
    Access Status
    Open access
    Authors
    Attanayake, Gayan
    Rong, Yue
    Date
    2012
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Attanayake, Gayan and Rong, Yue. 2012. RSS-based Indoor Positioning Accuracy Improvement Using Antenna Array in WLAN Environments, in Binghao Li (ed), International Conference on Indoor Positioning and Indoor Navigation, Nov 13-15 2012. Sydney, NSW: IEEE.
    Source Title
    Proceedings of the 2012 International Conference on Indoor Positioning and Indoor Navigation
    Source Conference
    2012 International Conference on Indoor Positioning and Indoor Navigation
    DOI
    10.1109/IPIN.2012.6418922
    ISBN
    978-1-4673-1954-6
    Remarks

    Copyright © 2012 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

    URI
    http://hdl.handle.net/20.500.11937/6699
    Collection
    • Curtin Research Publications
    Abstract

    The interest in utilizing Wi-Fi signals for indoor location estimation purposes has been increased recently due to wide deployment of WLANs. Received signal strength (RSS) based approach has become an attractive candidate for positioning owing to its simplicity and low-complexity, which can be easily implemented in modern wireless devices such as laptops and PDAs. However, the challenging nature of indoor wireless propagation environments provoke time varying location estimations from RSS based positioning algorithms. In this paper, we have shown that this variability of the location estimations can be reduced by introducing an antenna array at the receiving station. In our proposed approach, the variation of the received signal power with respect to time is averaged using a uniform linear antenna array (ULA) at the mobile station. We further explore the impact of number of array elements on the accuracy of the position estimations by using representative set of multilateration algorithms. In the first phase of analysis, we consider uncorrelated Rayleigh fading channels on each antenna element whilst in the second phase, we take into account the fading correlation between antenna elements using the spatial correlation function for two-dimensional (2D) diffuse field. The proposed positioning technique can be integrated into IEEE 802.11 compatible receivers with single-input multiple-output (SIMO) capability, thus be able to use for robust indoor localization purposes.

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