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Paper Abstract and Keywords
Presentation 2026-06-02 16:10
A Study on the Effect of DC Bias Control in Underwater SLIPT Using DCO-OFDM
Hideki Takaya, Yusuke Kozawa, Hiromasa Habuchi (Ibaraki Univ) WBS2026-20 RCC2026-20 MICT2026-20
Abstract (in Japanese) (See Japanese page) 
(in English) This paper investigates the effect of DC bias control in an underwater simultaneous lightwave information and power transfer (USLIPT) system employing DCO-OFDM. While underwater visible light communication (UVLC) enables high-speed data transmission, maintaining sufficient power supply for underwater devices remains a significant challenge. In particular, the DC bias in optical OFDM plays a crucial role not only in ensuring signal non-negativity but also in determining the energy harvesting performance. In this study, an LED-based optical OFDM USLIPT system is considered, and the relationships between the DC bias level and both bit error rate (BER) and average harvested power are theoretically analyzed. In addition, the impact of communication distance and data rate on system performance is evaluated. The results show that both BER and harvested power characteristics can be classified into three distinct regions depending on the bias level. Furthermore, it is demonstrated that the feasible bias range satisfying the BER constraint shrinks as the data rate increases, indicating a trade-off between communication performance and energy harvesting performance. Moreover, due to transmit power normalization, the AC signal component decreases in the high-bias region despite the increase in the DC component. As a result, the harvested power does not necessarily increase with the bias level. These findings highlight the importance of appropriate DC bias design for achieving efficient joint optimization of communication and energy harvesting in USLIPT systems.
Keyword (in Japanese) (See Japanese page) 
(in English) Underwater Visible Light Communication / Underwater Simultaneous Lightwave Information and Power Transfer / Orthogonal frequency-division multiplexing / Optical Orthogonal frequency-division multiplexing / / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 46, WBS2026-20, pp. 103-108, June 2026.
Paper # WBS2026-20 
Date of Issue 2026-05-25 (WBS, RCC, MICT) 
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 WBS2026-20 RCC2026-20 MICT2026-20

Conference Information
Committee RCC MICT WBS  
Conference Date 2026-06-01 - 2026-06-02 
Place (in Japanese) (See Japanese page) 
Place (in English) Yokosuka Research Park(YRP) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Reliable Communication and Control, Healthcare and Medical Information Communication Technologies, Coding, Modulation, Signal processing and General 
Paper Information
Registration To WBS 
Conference Code 2026-06-RCC-MICT-WBS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on the Effect of DC Bias Control in Underwater SLIPT Using DCO-OFDM 
Sub Title (in English)  
Keyword(1) Underwater Visible Light Communication  
Keyword(2) Underwater Simultaneous Lightwave Information and Power Transfer  
Keyword(3) Orthogonal frequency-division multiplexing  
Keyword(4) Optical Orthogonal frequency-division multiplexing  
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1st Author's Name Hideki Takaya  
1st Author's Affiliation Ibaraki University (Ibaraki Univ)
2nd Author's Name Yusuke Kozawa  
2nd Author's Affiliation Ibaraki University (Ibaraki Univ)
3rd Author's Name Hiromasa Habuchi  
3rd Author's Affiliation Ibaraki University (Ibaraki Univ)
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Speaker Author-1 
Date Time 2026-06-02 16:10:00 
Presentation Time 25 minutes 
Registration for WBS 
Paper # WBS2026-20, RCC2026-20, MICT2026-20 
Volume (vol) vol.126 
Number (no) no.46(WBS), no.47(RCC), no.48(MICT) 
Page pp.103-108 
#Pages 6 
Date of Issue 2026-05-25 (WBS, RCC, MICT) 

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