Transcription of SpotFi: Decimeter Level Localization Using WiFi
{{id}} {{{paragraph}}}
Example: marketing
SpotFi: Decimeter Level Localization Using WiFi
SpotFi: Decimeter Level Localization Using WiFiManikanta Kotaru, Kiran Joshi, Dinesh Bharadia, Sachin KattiStanford UniversityStanford, CA, USA{mkotaru, krjoshi, dineshb, paper presents the design and implementation of SpotFi,an accurate indoor Localization system that can be deployedon commodity wifi infrastructure. SpotFi only uses in-formation that is already exposed by wifi chips and doesnot require any hardware or firmware changes, yet achievesthe same accuracy as state-of-the-art Localization makes two key technical contributions. First, SpotFiincorporates super-resolution algorithms that can accuratelycompute the angle of arrival (AoA) of multipath componentseven when the access point (AP) has only three , it incorporates novel filtering and estimation tech-niques to identify AoA of direct path between the localiza-tion target and AP by assigning values for each path depend-ing on how likely the particular path is the direct path.}
of elements greater than the number of multipath com-ponents, thus overcoming the constraint of limited an-tennas. Our unique insight here is that these joint AoA and ToF estimation algorithms can be implemented us-ing the CSI information that is already exposed by the commodity WiFi cards. Using the AoA and ToF parame-
Loading..
Tags:
Information
Domain:
Source:
Link to this page:
Please notify us if you found a problem with this document: