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Paper Abstract and Keywords
Presentation 2022-09-16 10:50
Binary Radio Tomographic Imaging Based on LOS/NLOS Identification
Takahiro Matsuda (TMU), Yoshiaki Nishikawa, Eiji Takahashi, Takeo Onishi, Toshiki Takeuchi (NEC) CQ2022-40
Abstract (in Japanese) (See Japanese page) 
(in English) Radio Tomographic Imaging (RTI) is a technique to estimate Spatial Loss Fields (SLFs) that are maps quantifying the attenuation of radio signals in a monitored region. In this article, we consider RTI techniques in indoor factory environments, which deteriorate the performance of the RTI techniques due to severe multi-path channels. We propose the Binary Radio Tomographic Imaging (Binary RTI) method, where the attenuation level of each pixel in a SLF is defined as a binary value. The binary RTI method is suited for the factory environments including metallic objects, because radio signals are almost fully reflected rather than absorbed by these objects. The proposed method identifies whether received signals are transmitted on a line-of-sight (LOS) path or a non-line-of-sight path by analyzing their channel impulse responses, and the binary SLF is estimated from the LOS/NLOS identification. We evaluate the performance of the proposed method with simulation experiments.
Keyword (in Japanese) (See Japanese page) 
(in English) Radio Tomographic Imaging / factory environment / LOS / NLOS / / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 184, CQ2022-40, pp. 91-96, Sept. 2022.
Paper # CQ2022-40 
Date of Issue 2022-09-08 (CQ) 
ISSN Online edition: ISSN 2432-6380
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)
Download PDF CQ2022-40

Conference Information
Committee IA CQ MIKA  
Conference Date 2022-09-15 - 2022-09-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido Citizens Actives Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Communications Quality, 6G, IoT, Cross layer Technologies, Internet Operation and Management, etc. 
Paper Information
Registration To CQ 
Conference Code 2022-09-IA-CQ-MIKA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Binary Radio Tomographic Imaging Based on LOS/NLOS Identification 
Sub Title (in English)  
Keyword(1) Radio Tomographic Imaging  
Keyword(2) factory environment  
Keyword(3) LOS  
Keyword(4) NLOS  
1st Author's Name Takahiro Matsuda  
1st Author's Affiliation Tokyo Metropolitan University (TMU)
2nd Author's Name Yoshiaki Nishikawa  
2nd Author's Affiliation NEC Corporation (NEC)
3rd Author's Name Eiji Takahashi  
3rd Author's Affiliation NEC Corporation (NEC)
4th Author's Name Takeo Onishi  
4th Author's Affiliation NEC Corporation (NEC)
5th Author's Name Toshiki Takeuchi  
5th Author's Affiliation NEC Corporation (NEC)
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Speaker Author-1 
Date Time 2022-09-16 10:50:00 
Presentation Time 25 minutes 
Registration for CQ 
Paper # CQ2022-40 
Volume (vol) vol.122 
Number (no) no.184 
Page pp.91-96 
Date of Issue 2022-09-08 (CQ) 

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