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| Presentation | 2023-05-11 13:25 LPWA concentrator using multi-antenna beamforming Keigo Saito, Takeo Fujii, Koji Ishibashi (UEC), Yu Shibata, Soma Toki, Hideki Endo (Tokyo Gas)  SR2023-6 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In recent years, information aggregation by wireless sensor network (WSN) has been attracted attention. WSN consists of sensor nodes (SNs) and concentrators to aggregate the information of sensors. The power consumption of SNs is generally limited because of a battery. One method to achieve WSN with low power consumption is the use of LPWAN (Low Power Wide Area Network). In information aggregation with LPWAN, aggregated information is registered on a server after the concentrator aggregates information. The number of active SNs increases, and the increase of interference power associated with increasing the number of simultaneous transmitted signal at the concentrator may result in lower reception success rates. Therefore, in this paper, we propose the method where interference quantity due to SNs is reduced by using digital beamforming at the concentrator. In the proposed method, the beam for transmission suppresses interference caused by hidden nodes, and signals of multiple SNs are demodulated from an interfered signal by processing parallelly with multiple beams for reception. The simulation results show that the average PDR of the whole system and area size for collecting sensor data from SNs is improved compared to using an omnidirectional antenna. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | LPWAN / Wireless Sensor Network / Beamforming / Interference Suppression / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 123, no. 19, SR2023-6, pp. 33-40, May 2023. | |
| Paper # | SR2023-6 | |
| Date of Issue | 2023-05-04 (SR) | |
| 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 | SR2023-6 |
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| Conference Information | |
| Committee | SR |
| Conference Date | 2023-05-11 - 2023-05-12 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Center of lifelong learning Kiran (Higashi Muroran) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Software Defined Radio, Cognitive Radio, Spectrum Sharing, Machine Learning, etc. |
| Paper Information | |
| Registration To | SR |
| Conference Code | 2023-05-SR |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | LPWA concentrator using multi-antenna beamforming |
| Sub Title (in English) | |
| Keyword(1) | LPWAN |
| Keyword(2) | Wireless Sensor Network |
| Keyword(3) | Beamforming |
| Keyword(4) | Interference Suppression |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Keigo Saito |
| 1st Author's Affiliation | The University of Electro-Communications (UEC) |
| 2nd Author's Name | Takeo Fujii |
| 2nd Author's Affiliation | The University of Electro-Communications (UEC) |
| 3rd Author's Name | Koji Ishibashi |
| 3rd Author's Affiliation | The University of Electro-Communications (UEC) |
| 4th Author's Name | Yu Shibata |
| 4th Author's Affiliation | Tokyo Gas Co., Ltd. (Tokyo Gas) |
| 5th Author's Name | Soma Toki |
| 5th Author's Affiliation | Tokyo Gas Co., Ltd. (Tokyo Gas) |
| 6th Author's Name | Hideki Endo |
| 6th Author's Affiliation | Tokyo Gas Co., Ltd. (Tokyo Gas) |
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| Speaker | Author-1 |
| Date Time | 2023-05-11 13:25:00 |
| Presentation Time | 25 minutes |
| Registration for | SR |
| Paper # | SR2023-6 |
| Volume (vol) | vol.123 |
| Number (no) | no.19 |
| Page | pp.33-40 |
| #Pages | 8 |
| Date of Issue | 2023-05-04 (SR) |
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