Paper Abstract and Keywords |
Presentation |
2011-11-17 11:20
An Integration Method for Wireless Location Using Mobile Phone Built-in Sensors and TDOA Landmarks Mingmei Li, Kazuyuki Tasaka, Kiyohito Yoshihara (KDDI R&D Labs) IN2011-95 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Non-line-of-sight (NLOS) signal propagation is the major source of error in wireless Time Difference of Arrival (TDOA) indoor system. Even if enough LMs can be deployed by service providers or system designers, the existing methods encounter the location accuracy problem when less line-of-sight (LOS) measurements are detected. In this paper, we propose a new method to integrate the user’s step length into location estimation in wireless TDOA indoor location systems. The proposed method utilizes the user’s step size and counts from mobile phone built-in sensors as reference to detect LOS/NLOS measurements. When less LOS measurements are detected, the previous location and step length are added to the least square (LS) method as a supplementary reference landmark (LM) and distance. Simulations results show that, when less number of hearable LOS measurements is not enough, the user’s location is estimated with the supplementary reference LM and distance. Simulation results show that location error over time is reduced in a wireless TDOA location system, compared with the related works, in which NLOS measurement detections are overestimated or underestimated. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Non-line-of-sight (NLOS) / Time-difference-of-Arrival (TDOA) / mobile phone built-in sensors / / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 111, no. 295, IN2011-95, pp. 13-18, Nov. 2011. |
Paper # |
IN2011-95 |
Date of Issue |
2011-11-10 (IN) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
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IN2011-95 |
Conference Information |
Committee |
MoNA IN |
Conference Date |
2011-11-17 - 2011-11-18 |
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(See Japanese page) |
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Paper Information |
Registration To |
IN |
Conference Code |
2011-11-MoMuC-IN |
Language |
English |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
An Integration Method for Wireless Location Using Mobile Phone Built-in Sensors and TDOA Landmarks |
Sub Title (in English) |
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Keyword(1) |
Non-line-of-sight (NLOS) |
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Time-difference-of-Arrival (TDOA) |
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mobile phone built-in sensors |
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1st Author's Name |
Mingmei Li |
1st Author's Affiliation |
KDDI R&D Inc. (KDDI R&D Labs) |
2nd Author's Name |
Kazuyuki Tasaka |
2nd Author's Affiliation |
KDDI R&D Inc. (KDDI R&D Labs) |
3rd Author's Name |
Kiyohito Yoshihara |
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KDDI R&D Inc. (KDDI R&D Labs) |
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Speaker |
Author-1 |
Date Time |
2011-11-17 11:20:00 |
Presentation Time |
25 minutes |
Registration for |
IN |
Paper # |
IN2011-95 |
Volume (vol) |
vol.111 |
Number (no) |
no.295 |
Page |
pp.13-18 |
#Pages |
6 |
Date of Issue |
2011-11-10 (IN) |
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