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Paper Abstract and Keywords
Presentation 2021-03-05 09:25
Experimental study of signal application method using add circuit in mode-division multiplexed transmission method
Takuya Sato, Tohlu Matsushima, Yuki Fukumoto (Kyutech) EMCJ2020-73
Abstract (in Japanese) (See Japanese page) 
(in English) In high-speed wired communications, studies are being conducted to increase the transmission capacityby using multiple lines. In differential transmission, 2n signal lines are required to send n signals. In contrast, wehave proposed mode division multiplexed transmission method that can transmit n signals with n+1 lines. In theproposed method, an adder is required because multiple mode voltages are added together and applied to the cable.In this report, we fabricated a mode signal application circuit using an adder with an operational amplifier. A 1 mshielded 4-wire cable was connected to the circuit, and a square wave equivalent to 20 Mbps was applied to eachmode to demonstrate the mode division multiplexed transmission method. As a result, the fabricated circuit boardwas able to apply single mode signals and multiple mode signals simultaneously. As a comparison, we performedsingle-ended transmission on the same cable and compared the crosstalk between the modes of the proposed methodwith the crosstalk generated in other signal lines. As a result, the single-ended transmission had a signal line-to-linecrosstalk of up to 22%for the voltage value output on the line that was sending the signal. On the other hand, themode-multiplexed transmission method resulted in about 4%, a reduction of about 15dB.
Keyword (in Japanese) (See Japanese page) 
(in English) mode division multiplexed transmission / wire communication / eigenmode / add circuit / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 420, EMCJ2020-73, pp. 7-12, March 2021.
Paper # EMCJ2020-73 
Date of Issue 2021-02-26 (EMCJ) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 EMCJ MICT  
Conference Date 2021-03-05 - 2021-03-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMCJ 
Conference Code 2021-03-EMCJ-MICT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Experimental study of signal application method using add circuit in mode-division multiplexed transmission method 
Sub Title (in English)  
Keyword(1) mode division multiplexed transmission  
Keyword(2) wire communication  
Keyword(3) eigenmode  
Keyword(4) add circuit  
1st Author's Name Takuya Sato  
1st Author's Affiliation Kyushu Institute of Technology (Kyutech)
2nd Author's Name Tohlu Matsushima  
2nd Author's Affiliation Kyushu Institute of Technology (Kyutech)
3rd Author's Name Yuki Fukumoto  
3rd Author's Affiliation Kyushu Institute of Technology (Kyutech)
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Date Time 2021-03-05 09:25:00 
Presentation Time 20 
Registration for EMCJ 
Paper # IEICE-EMCJ2020-73 
Volume (vol) IEICE-120 
Number (no) no.420 
Page pp.7-12 
#Pages IEICE-6 
Date of Issue IEICE-EMCJ-2021-02-26 

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