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Paper Abstract and Keywords
Presentation 2006-11-17 15:25
Study of 1Gbps Optical Wireless Transmission using LEDs with Bandwidth Equalization and M-ASK Modulation Techniques
Kazutoshi Hase, Keisuke Kinoshita, Hideo Yasumoto, Tomoaki Ieda, Hiroyuki Sasai, Masaru Fuse (Matsushita Electric) OCS2006-72
Abstract (in Japanese) (See Japanese page) 
(in English) We studied the 1Gbps diffusing optical wireless transmission scheme using LEDs to balance the high speed and the cost-effectiveness as the next generation high-speed wireless transmission technology. To achieve high speed modulation for commercially available LEDs with the bandwidth of about 50MHz, by equalizing the bandwidth and optimizing the modulation current amplitude, we demonstrated the 500Mbps modulation under the low bias drive condition, and 1Gbps modulation was achieved by introducing the Multi-Amplitude Shift Keying (M-ASK) modulation technique. To extend the transmission distance, we studied the modulation circuit of plural LEDs, and clarified the series connection number in order to ensure the required modulation bandwidth. Based on the result of the above-mentioned study, we developed the optical transmitter and the optical receiver, and the error free characteristics (BER<10^-12) was demonstrated in the transmission distance of 50cm.
Keyword (in Japanese) (See Japanese page) 
(in English) Optical Wireless Communication / LED / Bandwidth Equalization / M-ASK Modulation / clipping / Bit Error Rate / /  
Reference Info. IEICE Tech. Rep., vol. 106, no. 349, OCS2006-72, pp. 57-61, Nov. 2006.
Paper # OCS2006-72 
Date of Issue 2006-11-09 (OCS) 
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)
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Conference Information
Committee ITE-BCT IEE-CMN OCS OFT  
Conference Date 2006-11-16 - 2006-11-17 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OCS 
Conference Code 2006-11-ITE-BCT-IEE-CMN-OCS-OFT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study of 1Gbps Optical Wireless Transmission using LEDs with Bandwidth Equalization and M-ASK Modulation Techniques 
Sub Title (in English)  
Keyword(1) Optical Wireless Communication  
Keyword(2) LED  
Keyword(3) Bandwidth Equalization  
Keyword(4) M-ASK Modulation  
Keyword(5) clipping  
Keyword(6) Bit Error Rate  
Keyword(7)  
Keyword(8)  
1st Author's Name Kazutoshi Hase  
1st Author's Affiliation Matsushita Electric Industrial Co., Ltd. (Matsushita Electric)
2nd Author's Name Keisuke Kinoshita  
2nd Author's Affiliation Matsushita Electric Industrial Co., Ltd. (Matsushita Electric)
3rd Author's Name Hideo Yasumoto  
3rd Author's Affiliation Matsushita Electric Industrial Co., Ltd. (Matsushita Electric)
4th Author's Name Tomoaki Ieda  
4th Author's Affiliation Matsushita Electric Industrial Co., Ltd. (Matsushita Electric)
5th Author's Name Hiroyuki Sasai  
5th Author's Affiliation Matsushita Electric Industrial Co., Ltd. (Matsushita Electric)
6th Author's Name Masaru Fuse  
6th Author's Affiliation Matsushita Electric Industrial Co., Ltd. (Matsushita Electric)
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Speaker Author-1 
Date Time 2006-11-17 15:25:00 
Presentation Time 25 minutes 
Registration for OCS 
Paper # OCS2006-72 
Volume (vol) vol.106 
Number (no) no.349 
Page pp.57-61 
#Pages 5 
Date of Issue 2006-11-09 (OCS) 

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