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Paper Abstract and Keywords
Presentation 2026-07-22 09:00
[Invited Lecture] LiDAR-Based Digital Twins for Ray-Tracing Analysis
Ragil Putro Wicaksono, Zulfadli Bin Zainal, Elfady Satya Widayaka, Eric Christopher, Seiji Kunishige, Kwangrok Chang (MOTIV), Izumi Ono, Suguru Kameda (Hiroshima Univ.) RCC2026-22 SR2026-33
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes a comprehensive workflow that automatically constructs 3D digital twins from raw LiDAR point cloud data for high-accuracy ray-tracing-based RF coverage simulations. We address key challenges such as point cloud denoising, surface meshing, and material assignment. The proposed system was evaluated in three distinct network environments: a controlled laboratory, a complex indoor environment, and an urban outdoor environment. Compared with real-world RF measurements, the coherent multipath simulation achieved a remarkable median absolute error (MedAE) of 0.1 dB. These results demonstrate that the proposed system enables measurement-level prediction accuracy, supporting rapid and cost-effective wireless network planning.
Keyword (in Japanese) (See Japanese page) 
(in English) Digital Twin / LiDAR / Ray-Tracing / RF Coverage Simulation / 5G/4G / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 120, SR2026-33, pp. 74-81, July 2026.
Paper # SR2026-33 
Date of Issue 2026-07-14 (RCC, SR) 
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 RCC2026-22 SR2026-33

Conference Information
Committee SR RCC  
Conference Date 2026-07-21 - 2026-07-23 
Place (in Japanese) (See Japanese page) 
Place (in English) Yamaguchi 
Topics (in Japanese) (See Japanese page) 
Topics (in English) IoT, Wireless Distributed Networks, Sensor Networks, Control Communications, Network Control, General Topics 
Paper Information
Registration To SR 
Conference Code 2026-07-SR-RCC 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) LiDAR-Based Digital Twins for Ray-Tracing Analysis 
Sub Title (in English)  
Keyword(1) Digital Twin  
Keyword(2) LiDAR  
Keyword(3) Ray-Tracing  
Keyword(4) RF Coverage Simulation  
Keyword(5) 5G/4G  
Keyword(6)  
Keyword(7)  
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1st Author's Name Ragil Putro Wicaksono  
1st Author's Affiliation MOTiV Research Co. (MOTIV)
2nd Author's Name Zulfadli Bin Zainal  
2nd Author's Affiliation MOTiV Research Co. (MOTIV)
3rd Author's Name Elfady Satya Widayaka  
3rd Author's Affiliation MOTiV Research Co. (MOTIV)
4th Author's Name Eric Christopher  
4th Author's Affiliation MOTiV Research Co. (MOTIV)
5th Author's Name Seiji Kunishige  
5th Author's Affiliation MOTiV Research Co. (MOTIV)
6th Author's Name Kwangrok Chang  
6th Author's Affiliation MOTiV Research Co. (MOTIV)
7th Author's Name Izumi Ono  
7th Author's Affiliation Hiroshima University (Hiroshima Univ.)
8th Author's Name Suguru Kameda  
8th Author's Affiliation Hiroshima University (Hiroshima Univ.)
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Speaker Author-1 
Date Time 2026-07-22 09:00:00 
Presentation Time 30 minutes 
Registration for SR 
Paper # RCC2026-22, SR2026-33 
Volume (vol) vol.126 
Number (no) no.119(RCC), no.120(SR) 
Page pp.2-9(RCC), pp.74-81(SR) 
#Pages 8 
Date of Issue 2026-07-14 (RCC, SR) 

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