Publication Type

Conference Proceeding Article

Version

acceptedVersion

Publication Date

7-2014

Abstract

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 the WARP hardware radio platform using standard 20~MHz wireless LAN channels.

Keywords

tdoa, synchronization, distributed mimo, location tracking

Discipline

Software Engineering | Systems Architecture

Research Areas

Software and Cyber-Physical Systems

Publication

HotWireless '14: Proceedings of the 1st ACM Workshop on Hot Topics in Wireless: September 11, 2014, Maui, Hawaii

First Page

43

Last Page

48

ISBN

9781450330763

Identifier

10.1145/2643614.2643619

Publisher

ACM

City or Country

New York

Additional URL

http://doi.org/10.1145/2643614.2643619

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