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Paper Abstract and Keywords
Presentation 2014-08-20 09:30
Multi-level Amplitude Sift Keying using Spatial Combining for the Visible-Light Communication System with an LED-backlighted Signboard
Yuto Jinno, Kentaro Kobayashi, Hiraku Okada, Masaaki Katayama (Nagoya Univ.) RCS2014-147
Abstract (in Japanese) (See Japanese page) 
(in English) This manuscript proposes a new Visible-Light Communication (VLC) system
that transmits information to handheld terminals carried by pedestrians
through the use of LED backlighted signboards located in public spaces.
To improve previous systems proposed by us, we introduce the use of multilevel modulation.
Specifically, in order to avoid the effect of nonlinearity of LEDs, we
apply binary baseband modulation to LED by FET switching.
We propose a scheme that realizes multilevel amplitude modulation by
spatially combining the binary light signals.
In order to evaluate the performance, multiple LED lights and a
diffuser board are employed to set the experimental environment.
In the experiment, we found out that the duty cycle of the ON/OFF
switching of the LEDs affects the output voltage of the photoelectric
converter.
Thus, we apply a scheme that makes those duty cycles become uniform.
Consequently, 4-level amplitude modulation is achieved, and our experimental result shows that a
t a transmission rate of 5Mbps the bit error rate becomes lower than $10^{-3}$.
Keyword (in Japanese) (See Japanese page) 
(in English) Visible-Light Communication (VLC) / LED-backlighted sign board / Spatial Combinig / Multi-level Amplitude Shift Keing / / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 180, RCS2014-147, pp. 49-54, Aug. 2014.
Paper # RCS2014-147 
Date of Issue 2014-08-12 (RCS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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 RCS2014-147

Conference Information
Committee SAT RCS  
Conference Date 2014-08-19 - 2014-08-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Kochi City Cultura-Plaza CUL-PORT 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Satellite Communications, Broadcasting, Error Correction, Wireless Communication Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2014-08-SAT-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Multi-level Amplitude Sift Keying using Spatial Combining for the Visible-Light Communication System with an LED-backlighted Signboard 
Sub Title (in English)  
Keyword(1) Visible-Light Communication (VLC)  
Keyword(2) LED-backlighted sign board  
Keyword(3) Spatial Combinig  
Keyword(4) Multi-level Amplitude Shift Keing  
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Keyword(8)  
1st Author's Name Yuto Jinno  
1st Author's Affiliation Nagoya University (Nagoya Univ.)
2nd Author's Name Kentaro Kobayashi  
2nd Author's Affiliation Nagoya University (Nagoya Univ.)
3rd Author's Name Hiraku Okada  
3rd Author's Affiliation Nagoya University (Nagoya Univ.)
4th Author's Name Masaaki Katayama  
4th Author's Affiliation Nagoya University (Nagoya Univ.)
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Speaker Author-1 
Date Time 2014-08-20 09:30:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2014-147 
Volume (vol) vol.114 
Number (no) no.180 
Page pp.49-54 
#Pages
Date of Issue 2014-08-12 (RCS) 


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