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Paper Abstract and Keywords
Presentation 2018-06-22 10:40
Evaluation of OAM Based Mode Division Multiplexing Transmission in Different Propagation Environments
Ayano Yamamoto, Toshihiko Nishimura, Takeo Ohgane (Hokkaido Univ.), Tomoya Tandai, Daisuke Uchida (Toshiba) RCS2018-69
Abstract (in Japanese) (See Japanese page) 
(in English) Orbital angular momentum (OAM) is a physical quantity of an electromagnetic wave that is independent of polarization, and the electromagnetic wave having OAM becomes a helical wave. Modes can be defined according to the number of turns of helix, and the different modes are mutually orthogonal. In recent years, with growth of the millimeter wave technology and demands for further high-speed large capacity transmission, a new spatial multiplexing transmission scheme using the orthogonality of OAM has attracted attention. However, there are still problems to be solved for a practical use, one of which is the spread of the helical beam accampanying with the increase of propagation distances. In this paper, the characteristics considering the distance attenuation and/or the ground reflected wave are evaluated for various condition on the distance between the transmitter and the receiver and the radius of the transmit and/or receive antenna array in the line-of-sight environment.
As the results, it has been shown that spreading of the helical beam can be suppressed by setting the radius of the transmit antenna array larger, and that the optimum radius of the receive antenna array exists depending on the radius of the transmit antenna array and the distance between the transmitter and the receiver.
Keyword (in Japanese) (See Japanese page) 
(in English) Orbital Angular Momentum (OAM) Mode Multiplexing Transmission / Uniform Circular Array / Spatial Multiplexing / Ground Reflection / / / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 101, RCS2018-69, pp. 201-206, June 2018.
Paper # RCS2018-69 
Date of Issue 2018-06-13 (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 RCS2018-69

Conference Information
Committee RCS  
Conference Date 2018-06-20 - 2018-06-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagasaki University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2018-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Evaluation of OAM Based Mode Division Multiplexing Transmission in Different Propagation Environments 
Sub Title (in English)  
Keyword(1) Orbital Angular Momentum (OAM) Mode Multiplexing Transmission  
Keyword(2) Uniform Circular Array  
Keyword(3) Spatial Multiplexing  
Keyword(4) Ground Reflection  
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Keyword(8)  
1st Author's Name Ayano Yamamoto  
1st Author's Affiliation Hokkaido University (Hokkaido Univ.)
2nd Author's Name Toshihiko Nishimura  
2nd Author's Affiliation Hokkaido University (Hokkaido Univ.)
3rd Author's Name Takeo Ohgane  
3rd Author's Affiliation Hokkaido University (Hokkaido Univ.)
4th Author's Name Tomoya Tandai  
4th Author's Affiliation Toshiba Corporation (Toshiba)
5th Author's Name Daisuke Uchida  
5th Author's Affiliation Toshiba Corporation (Toshiba)
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Speaker Author-1 
Date Time 2018-06-22 10:40:00 
Presentation Time 10 minutes 
Registration for RCS 
Paper # RCS2018-69 
Volume (vol) vol.118 
Number (no) no.101 
Page pp.201-206 
#Pages 6 
Date of Issue 2018-06-13 (RCS) 

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