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| Presentation | 2021-01-22 10:10 [Invited Lecture] Vegetation Attenuation Characteristics at the 920 MHz Band in Farm Field Minoru Inomata, Wataru Yamada, Shoko Shinohara, Yusuke Asai (NTT)  AP2020-110 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In this paper, we investigated the vegetation attenuation characteristics at the 920 MHz band in line-of-sight (LOS) and non-line-of-sight (NLOS) farm field for designing the area coverage. Regarding the vegetation attenuation characteristics in NLOS environments, the coefficient related to frequency and the distance attenuation coefficient were larger than those of the representative ITU-R model, and each coefficient tended to be larger when the antenna height was higher than the tree height. We proposed the vegetation attenuation model on the basis of these characteristics. The comparison results between the measurement and prediction results revealed that prediction results is similar tendency to the measurement results, and the root mean square value (RMSE) was improved about 7.5 dB. In addition, in the LOS environments, the direct wave and the reflected wave from the tree are dominant path. Therefore, we calculated the path loss in LOS environment using the two-ray model and the RMSE value is about 5.6 dB. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Vegetation attenuation / farm field / 920MHz band / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 120, no. 325, AP2020-110, pp. 39-43, Jan. 2021. | |
| Paper # | AP2020-110 | |
| Date of Issue | 2021-01-14 (AP) | |
| 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 | AP2020-110 |
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| Conference Information | |
| Committee | WPT AP |
| Conference Date | 2021-01-21 - 2021-01-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2021-01-WPT-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Vegetation Attenuation Characteristics at the 920 MHz Band in Farm Field |
| Sub Title (in English) | |
| Keyword(1) | Vegetation attenuation |
| Keyword(2) | farm field |
| Keyword(3) | 920MHz band |
| Keyword(4) | |
| Keyword(5) | |
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| Keyword(8) | |
| 1st Author's Name | Minoru Inomata |
| 1st Author's Affiliation | NTT (NTT) |
| 2nd Author's Name | Wataru Yamada |
| 2nd Author's Affiliation | NTT (NTT) |
| 3rd Author's Name | Shoko Shinohara |
| 3rd Author's Affiliation | NTT (NTT) |
| 4th Author's Name | Yusuke Asai |
| 4th Author's Affiliation | NTT (NTT) |
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| Speaker | Author-1 |
| Date Time | 2021-01-22 10:10:00 |
| Presentation Time | 25 minutes |
| Registration for | AP |
| Paper # | AP2020-110 |
| Volume (vol) | vol.120 |
| Number (no) | no.325 |
| Page | pp.39-43 |
| #Pages | 5 |
| Date of Issue | 2021-01-14 (AP) |
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