Information: Join today and make your research activities more affordable! Technical workshop participation fees and annual registration fees are available at member rates.
Notice: [Important] Announcement of Changes to Registration Fee Payment and Manuscript Upload Procedures for IEICE Technical Meetings
IEICE Technical Committee Submission System
Conference Paper's Information		 Online Proceedings
[Sign in]
Tech. Rep. Archives
 Go Top Page Go Previous   [Japanese] / [English] 

Paper Abstract and Keywords
Presentation 2026-06-19 14:30
A Study on Data-Driven Tuning of Extended Weighted Least Squares for UWB Indoor Positioning
Ryoichi Kawaguchi, Shinsuke Ibi, Hisato Iwai (Doshisha Univ) RCS2026-84
Abstract (in Japanese) (See Japanese page) 
(in English) Ultra-wideband (UWB) communications are expected to be used for indoor positioning technology owing to their wide bandwidth and low power consumption.
%
In particular, the time difference of arrival (TDoA) method can provide highly accurate positioning, and the transmitter position is estimated using methods such as the least squares (LS) and weighted LS (WLS) methods.
%
However, positioning accuracy unavoidably suffers from degradation caused by non-line of sight (NLOS) and multipath.
%
Therefore, this study introduces neural network (NN)-optimized correction values to mitigate NLOS and multipath effects in WLS and extended WLS methods.
%
We use two NN models: a simple model, the multi-layer perceptron (MLP), and a model specialized for time-series data, the long-short-term memory (LSTM).
%
To ensure practicality, we conduct 3D mobile positioning using multiple transmitters.
%
Using measured data, we first compare conventional algorithms (LS, Chan, and Cuckoo Search (CS)), and subsequently demonstrate the effectiveness of our proposed method against them.
%
Furthermore, by comparing the proposed methods with each other, we verify the effect of extending the positioning method on improving accuracy.
Keyword (in Japanese) (See Japanese page) 
(in English) UWB / indoor positioning / neural network / time difference of arrival / weighted least squares / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 72, RCS2026-84, pp. 331-336, June 2026.
Paper # RCS2026-84 
Date of Issue 2026-06-10 (RCS) 
ISSN 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)
Download PDF RCS2026-84

Conference Information
Committee RCS  
Conference Date 2026-06-17 - 2026-06-19 
Place (in Japanese) (See Japanese page) 
Place (in English) The Ohama Nobumoto Memorial Hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) First Presentation in IEICE Technical Committee, Resource Control, Scheduling, Wireless Communications, etc. 
Paper Information
Registration To RCS 
Conference Code 2026-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Data-Driven Tuning of Extended Weighted Least Squares for UWB Indoor Positioning 
Sub Title (in English)  
Keyword(1) UWB  
Keyword(2) indoor positioning  
Keyword(3) neural network  
Keyword(4) time difference of arrival  
Keyword(5) weighted least squares  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Ryoichi Kawaguchi  
1st Author's Affiliation Doshisha University (Doshisha Univ)
2nd Author's Name Shinsuke Ibi  
2nd Author's Affiliation Doshisha University (Doshisha Univ)
3rd Author's Name Hisato Iwai  
3rd Author's Affiliation Doshisha University (Doshisha Univ)
4th Author's Name  
4th Author's Affiliation ()
5th Author's Name  
5th Author's Affiliation ()
6th Author's Name  
6th Author's Affiliation ()
7th Author's Name  
7th Author's Affiliation ()
8th Author's Name  
8th Author's Affiliation ()
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
21st Author's Name  
21st Author's Affiliation ()
22nd Author's Name  
22nd Author's Affiliation ()
23rd Author's Name  
23rd Author's Affiliation ()
24th Author's Name  
24th Author's Affiliation ()
25th Author's Name  
25th Author's Affiliation ()
26th Author's Name / /
26th Author's Affiliation ()
()
27th Author's Name / /
27th Author's Affiliation ()
()
28th Author's Name / /
28th Author's Affiliation ()
()
29th Author's Name / /
29th Author's Affiliation ()
()
30th Author's Name / /
30th Author's Affiliation ()
()
31st Author's Name / /
31st Author's Affiliation ()
()
32nd Author's Name / /
32nd Author's Affiliation ()
()
33rd Author's Name / /
33rd Author's Affiliation ()
()
34th Author's Name / /
34th Author's Affiliation ()
()
35th Author's Name / /
35th Author's Affiliation ()
()
36th Author's Name / /
36th Author's Affiliation ()
()
Speaker Author-1 
Date Time 2026-06-19 14:30:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2026-84 
Volume (vol) vol.126 
Number (no) no.72 
Page pp.331-336 
#Pages 6 
Date of Issue 2026-06-10 (RCS) 

[Return to Top Page]

[Return to IEICE Web Page]
The Institute of Electronics, Information and Communication Engineers (IEICE), Japan