Performance Bounds of RSSI-based Wi-Fi Positioning Under Different Estimation Scenarios

Mohamed Mansour, Deric Waters, and Tarkesh Pande

Abstract:	We derive a new formula for describing the dilution of precision of indoor Wi-Fi positioning based on signal strength in a controlled environment. We call this metric Wi-Fi dilution of precision (WDOP). It provides a complete description of the wireless channel as well as the access point geometry. We also derive the performance bounds of RSSI-based Wi-Fi indoor positioning using the log-normal shadowing model which is directly related to the WDOP. We show different variations of the Cramer-Rao bound of the position estimation based on the knowledge of the channel parameters.
Published in:	Proceedings of the 24th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2011) September 20 - 23, 2011 Oregon Convention Center, Portland, Oregon Portland, OR
Pages:	3923 - 3929
Cite this article:	Mansour, Mohamed, Waters, Deric, Pande, Tarkesh, "Performance Bounds of RSSI-based Wi-Fi Positioning Under Different Estimation Scenarios," Proceedings of the 24th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2011), Portland, OR, September 2011, pp. 3923-3929.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In