Online calibration of path loss exponent in wireless sensor networks

Guoqiang Mao*, Brian D.O. Anderson, Fidan Bariş

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    33 Citations (Scopus)

    Abstract

    The path loss exponent (PLE) is a parameter indicating the rate at which the received signal strength (RSS) decreases with distance, and its value depends on the specific propagation environment. Path loss exponent estimation plays an important role in distance-based wireless sensor network localization, where distance is estimated from the RSS measurements. Path loss exponent estimation is also useful for other purposes like sensor network dimensioning. Existing techniques on PLE estimation rely on both RSS measurements and distance measurements in the same environment to calibrate the PLE. However distance measurements can be difficult and expensive to obtain in some environments. In this paper we propose a novel technique for online calibration of the path loss exponent in wireless sensor networks without using distance measurements. The major contribution of this paper is to demonstrate that it is possible to estimate the PLE using only power measurements and the geometric constraints associated with planarity in a sensor network. This may have a significant impact on wireless sensor network localization.

    Original languageEnglish
    Title of host publicationIEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference
    DOIs
    Publication statusPublished - 2006
    EventIEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference - San Francisco, CA, United States
    Duration: 27 Nov 20061 Dec 2006

    Publication series

    NameGLOBECOM - IEEE Global Telecommunications Conference

    Conference

    ConferenceIEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference
    Country/TerritoryUnited States
    CitySan Francisco, CA
    Period27/11/061/12/06

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