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2733 Using time-of-flight for WLAN localization: feasibility study
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Muthukrishnan, K. and Koprinkov, G.T. and Meratnia, N. and Lijding, M.E.M. (2006) Using time-of-flight for WLAN localization: feasibility study. Technical Report TR-CTIT-06-28, Centre for Telematics and Information Technology University of Twente, Enschede. ISSN 1381-3625

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Abstract

Although signal strength based techniques are widely employed for WLAN localization, they generally suffer from providing highly accurate location information. In this paper, we first present the general shortcomings of the signal strength based approaches used for WLANbased
localization and then state reasons why time-of-flight could be an attractive alternative. We subsequently analyze the feasibility of using time-of-flight technique for WLAN localization by synchronizing the clock using Network Time Protocol (NTP) as well as measuring the time
at (i) network layer level, (ii) data link layer level, and (iii) firmware level. We conclude that at present using TOF is not a feasible approach because of the limitation of current hardware and protocols.

Item Type:Internal Report (Technical Report)
Research Group:EWI-CAES: Computer Architecture for Embedded Systems, EWI-DIES: Distributed and Embedded Security
Research Program:CTIT-UBRICKS: Building Blocks for Ubiquitous Computing and Communication
Research Project:Smart Surroundings
ID Code:2733
Deposited On:20 June 2006
Refereed:No
More Information:statisticsmetis

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