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Paper Abstract and Keywords
Presentation 2026-03-06 11:00
Spectrum Efficiency Improvement by Adaptive Modulation and LED Lighting Allocation in LED Visible Light Wireless Communications by Spatially Parallel Signal Transmission with Multiple Users
Ryoya Maruyama, Shigeru Tomisato, Satoshi Denno, Kazuhiro Uehara (Okayama Univ.) SRW2025-81
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes the combined method in which both adaptive modulation for each photodetector and LED lighting allocation for equalized spectral efficiency among users are performed in multiple-user LED visible light wireless communications by spatially parallel signal transmission. Area spectral efficiency improvement with the proposed method is evaluated by computer simulation The evaluation results show that the proposed method can increase spectral efficiency by 1.2 times for 2 users and 1.1 times for 3 users even with shorter distance between users compared to that with adaptive modulation for each evaluation point and conventional LED lighting allocation.
Keyword (in Japanese) (See Japanese page) 
(in English) Visible Light Wireless Communication / LED / Spatially Parallel Signal Transmission / / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 389, SRW2025-81, pp. 80-85, March 2026.
Paper # SRW2025-81 
Date of Issue 2026-02-25 (SRW) 
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 SRW2025-81

Conference Information
Committee RCS SR SRW  
Conference Date 2026-03-04 - 2026-03-06 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo University of Science 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To SRW 
Conference Code 2026-03-RCS-SR-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Spectrum Efficiency Improvement by Adaptive Modulation and LED Lighting Allocation in LED Visible Light Wireless Communications by Spatially Parallel Signal Transmission with Multiple Users 
Sub Title (in English)  
Keyword(1) Visible Light Wireless Communication  
Keyword(2) LED  
Keyword(3) Spatially Parallel Signal Transmission  
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1st Author's Name Ryoya Maruyama  
1st Author's Affiliation Okayama University (Okayama Univ.)
2nd Author's Name Shigeru Tomisato  
2nd Author's Affiliation Okayama University (Okayama Univ.)
3rd Author's Name Satoshi Denno  
3rd Author's Affiliation Okayama University (Okayama Univ.)
4th Author's Name Kazuhiro Uehara  
4th Author's Affiliation Okayama University (Okayama Univ.)
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Speaker Author-1 
Date Time 2026-03-06 11:00:00 
Presentation Time 25 minutes 
Registration for SRW 
Paper # SRW2025-81 
Volume (vol) vol.125 
Number (no) no.389 
Page pp.80-85 
#Pages 6 
Date of Issue 2026-02-25 (SRW) 

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