An Experimental Comparison between Device-free Passive Tracking and Radio Tomographic Imaging
نویسندگان
چکیده
This paper presents a comparison between Radio Tomographic Imaging (RTI) and Device-free Passive (DfP) tracking in standard WiFi networks. We show that for typical WiFi deployments, tracking methods are able to extract location information from a limited number of streams while imaging methods fail to produce meaningful images. On the other hand, we show that when the number of streams increases, imaging methods are able to actually image the area of interest while tracking methods can only infer the location of the user, but with increased accuracy. We further compare the performance and cost trade-offs involved in choosing between these two systems.
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