IMDEA Networks Institute Publications Repository

Deep Inspection of the Noise in WiFi Time-of-Flight Echo Techniques

Giustiniano, Domenico and Bourchas, Theodoros and Bednarek, Maciej and Lenders, Vincent (2015) Deep Inspection of the Noise in WiFi Time-of-Flight Echo Techniques. In: The 18th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems (ACM MSWIM), 2-6 November 2015, Cancun, Mexico.

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Time-of-flight (ToF) echo techniques have been proposed to estimate the distance between a local and a target station using regular WiFi radio devices. As of today, there is little understanding of the noise sources from ToF measurements. We conduct extensive experimental tests based on a customized WiFi echo technique implementation residing in the core of the 802.11 MAC processor and a high-resolution signal analysis of the WiFi traffic captured with a wideband oscilloscope. We discern the root of the error components in WiFi echo technique measurements and statistically characterize the offset noise added by the target station. Our measurements provide key insights to model the sources of noise and guidance for the design of robust distance estimators.

Item Type: Conference or Workshop Papers (Paper)
Uncontrolled Keywords: Indoor localization; 802.11; Time of Flight; Measurement noise; Analysis; Implementation; Evaluation.
Depositing User: Domenico Giustiniano
Date Deposited: 08 Sep 2015 13:22
Last Modified: 04 May 2017 10:07

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