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Paper Abstract and Keywords
Presentation 2024-07-17 10:25
Performance of Asymmetrically Clipped DC Biased Optical OFDM in a NOMA-Based Visible Light Communication System
Yang TU, CuiWei HE, Yuto LIM, Yasuo TAN (JAIST) RCS2024-85
Abstract (in Japanese) (See Japanese page) 
(in English) Visible light communication (VLC) is a promising technology to augment the existing WiFi infrastructure. In most VLC systems, light-emitting diodes (LEDs) are used as transmitters to provide simultaneous illumination and data transmission. However, the modulation bandwidth of typical LEDs is constrained, so the available modulation bandwidth needs to be efficiently used. Asymmetrically clipped DC biased optical OFDM (ADO-OFDM), which combines asymmetrically clipped optical OFDM (ACO-OFDM) and DC biased optical OFDM (DCO-OFDM), has been shown to be both spectrally efficient and power efficient. In this paper, we study the performance of ADO-OFDM in a non-orthogonal multiple access (NOMA) based VLC system. Specifically, we consider a VLC system with two users experiencing different channel conditions. The data to be transmitted to the user close to the LED transmitter is modulated onto the DCO-OFDM components, while the data intended for the far user is modulated onto the ACO-OFDM components. Moreover, unlike conventional ADO-OFDM, in this work, the signal components of ACO-OFDM and DCO-OFDM are assigned different power levels depending on the locations of the two users to balance performance between them. Our simulation results show that by optimizing the power ratios between these two signal components, the overall bit-error rate (BER) can be significantly reduced.
Keyword (in Japanese) (See Japanese page) 
(in English) Visible light communication / Spectral efficiency / OFDM / NOMA / / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 107, RCS2024-85, pp. 7-11, July 2024.
Paper # RCS2024-85 
Date of Issue 2024-07-10 (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 RCS2024-85

Conference Information
Committee RCC RCS SeMI NS SR RISING  
Conference Date 2024-07-17 - 2024-07-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido Citizens Activities Promotion Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To RCS 
Conference Code 2024-07-RCC-RCS-SeMI-NS-SR-RISING 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Performance of Asymmetrically Clipped DC Biased Optical OFDM in a NOMA-Based Visible Light Communication System 
Sub Title (in English)  
Keyword(1) Visible light communication  
Keyword(2) Spectral efficiency  
Keyword(3) OFDM  
Keyword(4) NOMA  
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1st Author's Name Yang TU  
1st Author's Affiliation Japan Advanced Institute of Science and Technology (JAIST)
2nd Author's Name CuiWei HE  
2nd Author's Affiliation Japan Advanced Institute of Science and Technology (JAIST)
3rd Author's Name Yuto LIM  
3rd Author's Affiliation Japan Advanced Institute of Science and Technology (JAIST)
4th Author's Name Yasuo TAN  
4th Author's Affiliation Japan Advanced Institute of Science and Technology (JAIST)
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Speaker Author-1 
Date Time 2024-07-17 10:25:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2024-85 
Volume (vol) vol.124 
Number (no) no.107 
Page pp.7-11 
#Pages 5 
Date of Issue 2024-07-10 (RCS) 

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