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| Presentation | 2019-05-16 15:10 [Invited Talk] Research trend of spatial optical communications with expanding applications Yoshihisa Takayama (Tokai Univ.)  IN2019-7 RCS2019-28 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A variety of applications of free-space laser propagation such as measurements, communications, energy transmissions, etc. have been proposed. In particular, the application to communications attracts attentions because of the possibility of increase in the data transmission rate compared with the current radio communications. So far, successful demonstrations using satellites and/or aircrafts have been reported. The research and development plans that inherit these results are in progress. The meetings of standardization have been held for the future operation. Besides, studies on applying free-space laser communications to deep space areas are evolving. Recently, the free-space laser communications have been also focused on as one of the candidates to provide high data transmission rate under water. A consortium targeting underwater optical communications has been established in 2018. In this work, the activities on the free-space laser communications are introduced. Some peculiar procedures necessary for the free-space laser communications with moving counterparts and some specifications of equipment used in demonstrations are shown. The results of the theoretical analysis and the experimental measurement are indicated to estimate the amount of fluctuations of the transmitted beam direction and the received beam intensity. The approaches to suppress the atmospheric influences on the free-space laser communication systems are also introduces. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Free-space optical communications / atmosphere / satellite / under-water / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 119, no. 30, IN2019-7, pp. 23-28, May 2019. | |
| Paper # | IN2019-7 | |
| Date of Issue | 2019-05-09 (IN, 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 | IN2019-7 RCS2019-28 |
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| Conference Information | |
| Committee | RCS IN NV |
| Conference Date | 2019-05-16 - 2019-05-17 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Keio University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Ad-Hoc/Sensor Networks/MANET, Mobile Networks, M2M/IoT Communications, Wi-Fi, IEEE802.15(ZigBee) and others |
| Paper Information | |
| Registration To | IN |
| Conference Code | 2019-05-RCS-IN-NV |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Research trend of spatial optical communications with expanding applications |
| Sub Title (in English) | |
| Keyword(1) | Free-space optical communications |
| Keyword(2) | atmosphere |
| Keyword(3) | satellite |
| Keyword(4) | under-water |
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| 1st Author's Name | Yoshihisa Takayama |
| 1st Author's Affiliation | Tokai University (Tokai Univ.) |
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| Speaker | Author-1 |
| Date Time | 2019-05-16 15:10:00 |
| Presentation Time | 50 minutes |
| Registration for | IN |
| Paper # | IN2019-7, RCS2019-28 |
| Volume (vol) | vol.119 |
| Number (no) | no.30(IN), no.31(RCS) |
| Page | pp.23-28(IN), pp.35-40(RCS) |
| #Pages | 6 |
| Date of Issue | 2019-05-09 (IN, RCS) |
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