%0 Generic
%A Xiong, J
%A Jamieson, KAS
%A Sundaresan, K
%C New York, NY
%D 2014
%F discovery:1452477
%I ACM Press
%P 43 - 48
%T Synchronicity: Pushing the Envelope of Fine-Grained Localization with Distributed MIMO
%U https://discovery.ucl.ac.uk/id/eprint/1452477/
%X Indoor localization of mobile devices and tags has received much  attention recently, with encouraging fine-grained localization results  available with enough line-of-sight coverage and enough hardware  infrastructure. Synchronicity is a location system that aims to push  the envelope of highly-accurate localization systems further in both  dimensions, requiring less line-of-sight and less infrastructure. With  Distributed MIMO network of wireless LAN access points (APs) as a starting point, we leverage the time synchronization that such a network affords to localize with time-difference-of-arrival information at the APs. We contribute novel super-resolution signal processing algorithms and reflection path elimination schemes, yielding superior results even in non-line-of-sight scenarios (with one to two walls separating client and APs). We implement and briefly evaluate Synchronicity on theWARP hardware radio platform using standard 20 MHz wireless LAN channels.
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