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| Presentation | 2020-11-25 16:15 [Invited Lecture] Spatially Parallel Signal Transmission in LED Visible Light Wireless Communications Shigeru Tomisato, Satoshi Denno, Kazuhiro Uehara (Okayama Univ.)  AP2020-82 RCS2020-121 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The traffic of wireless communication systems has greatly increased due to the expansion of smartphones and IoT. Visible light wireless communications with LED lighting have been researched to meet such increase. This paper evaluates spatially parallel signal transmission with a lot of LED lighting and photodetectors installed in the same place to expand signal transmission bandwidth in LED visible light communications. Transmission performance of each photodetector is evaluated according to LED lighting and photodetector arrangement, and the number of simultaneously receivable signal streams is estimated based on the evaluation results. In the estimation, square-shaped 25 LEDs with 1 m intervals are arranged within an evaluation area of 5 m square, and 9 photodetectors installed at the same place receive their light to realize spatially parallel signal transmission. The number of receivable signal streams is counted by desired-to-undesired signal power ratios of the evaluation points, where the LED with the strongest light is a desired one, and the other LEDs are undesired ones. The results show that 2 or more signal streams can be received at 97 % evaluation points by appropriately setting the angles among photodetectors according to the set LED lighting interval. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | LED / Visible Light Wireless Communications / Spatially Parallel Transmission / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 120, no. 249, RCS2020-121, pp. 66-70, Nov. 2020. | |
| Paper # | RCS2020-121 | |
| Date of Issue | 2020-11-18 (AP, 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 | AP2020-82 RCS2020-121 |
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| Conference Information | |
| Committee | RCS AP UWT |
| Conference Date | 2020-11-25 - 2020-11-27 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| 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 | 2020-11-RCS-AP-UWT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Spatially Parallel Signal Transmission in LED Visible Light Wireless Communications |
| Sub Title (in English) | |
| Keyword(1) | LED |
| Keyword(2) | Visible Light Wireless Communications |
| Keyword(3) | Spatially Parallel Transmission |
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| 1st Author's Name | Shigeru Tomisato |
| 1st Author's Affiliation | Okayama University (Okayama Univ.) |
| 2nd Author's Name | Satoshi Denno |
| 2nd Author's Affiliation | Okayama University (Okayama Univ.) |
| 3rd Author's Name | Kazuhiro Uehara |
| 3rd Author's Affiliation | Okayama University (Okayama Univ.) |
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| Speaker | Author-1 |
| Date Time | 2020-11-25 16:15:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | AP2020-82, RCS2020-121 |
| Volume (vol) | vol.120 |
| Number (no) | no.248(AP), no.249(RCS) |
| Page | pp.51-55(AP), pp.66-70(RCS) |
| #Pages | 5 |
| Date of Issue | 2020-11-18 (AP, RCS) |
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