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| Presentation | 2019-11-20 14:15 A Study on Performance Improvement for OAM Mode Multiplexing Using Multiple UCAs Ayano Yamamoto, Toshihiko Nishimura, Takeo Ohgane (Hokkaido Univ.), Tomoya Tandai, Daisuke Uchida (Toshiba Corp.)  RCS2019-212 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A novel spatial multiplexing transmission system using orthogonality of orbital angular momentum (OAM) mode has been attracting attention with the growth of millimeter wave technology and the demand for higher speed and larger capacity transmission. Uniformly spaced circular array (UCA) is one of the candidates for generating multiple OAM modes simultaneously. However, due to the characteristics of the Laguerre-Gaussian beam, the quality of each mode varies with distance when using a single UCA with a fixed diameter. In this paper, in order to improve the quality and stability of each mode, we propose a maximum ratio transmission (MRT) scheme using multiple UCAs on the transmitter side. By adjusting the complex amplitude of each mode in all UCAs, we can increase the received power and reduce the quality fluctuation caused by the transmission distance. Simulation results assuming free space propagation show that high throughput is maintained over a wide transmission range by MRT even when the radius of the UCA on the transmitting side and the receiving side is fixed. In addition, even though there is ground-reflected waves, the proposed method maintains high throughput although the transmission range is narrowed. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Orbital angular momentum / Uniform circular array / Spatial multiplexing / Multiple UCAs / Maximum ratio combining / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 119, no. 296, RCS2019-212, pp. 55-60, Nov. 2019. | |
| Paper # | RCS2019-212 | |
| Date of Issue | 2019-11-13 (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 | RCS2019-212 |
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| Conference Information | |
| Committee | AP RCS |
| Conference Date | 2019-11-20 - 2019-11-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Saga Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2019-11-AP-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Performance Improvement for OAM Mode Multiplexing Using Multiple UCAs |
| Sub Title (in English) | |
| Keyword(1) | Orbital angular momentum |
| Keyword(2) | Uniform circular array |
| Keyword(3) | Spatial multiplexing |
| Keyword(4) | Multiple UCAs |
| Keyword(5) | Maximum ratio combining |
| Keyword(6) | |
| Keyword(7) | |
| 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 Corp.) |
| 5th Author's Name | Daisuke Uchida |
| 5th Author's Affiliation | Toshiba Corporation (Toshiba Corp.) |
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| Speaker | Author-1 |
| Date Time | 2019-11-20 14:15:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2019-212 |
| Volume (vol) | vol.119 |
| Number (no) | no.296 |
| Page | pp.55-60 |
| #Pages | 6 |
| Date of Issue | 2019-11-13 (RCS) |
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