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| Presentation | 2021-03-05 16:55 Compensation for axis misalignment of UCA with OAM beam control Nobuhiko Sakuraya, Toshihiko Nishimura, Takeo Ohgane (Hokkaido Univ), Tomoya Tandai, Daisuke Uchida (Toshiba)  RCS2020-260 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In recent years, mobile data traffic has increased explosively due to increasing wireless devices. Capacity enhancement is required for fronthaul and backhaul accordingly. Spatial multiplex transmission using orbital angular momentum (OAM) has been attracting attention as a solution. One of the OAM multiplexing methods is the use of uniform circular array (UCA). It is known that the performance deteriorates seriously if there are misalignments of the UCA at transmitter and/or receiver. In this paper, we propose a method of compensation for the degradation with beam control and/or MMSE weights in the case that the UCA installation height is shifted on the transmitter or receiver and the UCA surface is slanted on the transmitter. Specifically, the received power is increased by adjusting the main beam toward the transmit UCA to compensate for the degradation. It is found that by using beam control, total throughput is improved compared to using only MMSE weights. By using the beam control method together, it was found that the method can be applied to a wide range of angles. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Orbital angular momentum / Uniform circular array / Spatial multiplexing / misalignment / beam control / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 120, no. 404, RCS2020-260, pp. 261-266, March 2021. | |
| Paper # | RCS2020-260 | |
| Date of Issue | 2021-02-24 (RCS) | |
| ISSN | Print edition: ISSN 0913-5685 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 | RCS2020-260 |
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| Conference Information | |
| Committee | RCS SR SRW |
| Conference Date | 2021-03-03 - 2021-03-05 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2021-03-RCS-SR-SRW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Compensation for axis misalignment of UCA with OAM beam control |
| Sub Title (in English) | |
| Keyword(1) | Orbital angular momentum |
| Keyword(2) | Uniform circular array |
| Keyword(3) | Spatial multiplexing |
| Keyword(4) | misalignment |
| Keyword(5) | beam control |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Nobuhiko Sakuraya |
| 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 (Toshiba) |
| 5th Author's Name | Daisuke Uchida |
| 5th Author's Affiliation | Toshiba (Toshiba) |
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| Speaker | Author-1 |
| Date Time | 2021-03-05 16:55:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2020-260 |
| Volume (vol) | vol.120 |
| Number (no) | no.404 |
| Page | pp.261-266 |
| #Pages | 6 |
| Date of Issue | 2021-02-24 (RCS) |
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