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| Presentation | 2021-10-07 13:00 [Poster Presentation] Improvement of Calculation Method of Arriving Waves from Road Direction by Constraint of Launched Rays Toshiki Shimizu, Hisato Iwai, Shinsuke Ibi (Doshisha Univ)  AP2021-72 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In the ray tracing method, which is widely used to analyze the radio wave characteristics in mobile communication environments, one of the technical issues is to improve the efficiency of the calculation. As one of the methods, it has been proposed to limit the calculation of paths only to dominant ones in terms of the radio wave characteristics. In the previous study on this subject, it was pointed out that the error is large in the region where arriving waves from the road direction (arriving waves from the edge of the building in the direction of the road where the mobile station is located) is dominant compared with the other paths. We thought that the reason was that the method of determining paths was inappropriate. In this study, we apply the ray-launching method to improve the path determination for more accurate path search. Also, to improve the efficiency of the calculation, we consider a method to constrain the ray direction from the base station to buildings of which the top is in line-of-sight from the base station. We evaluate the estimation accuracy of the propagation loss and the calculation time of the method. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Ray tracing / Mobile communication environment / Path search / Constraint of launched rays / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 191, AP2021-72, pp. 24-25, Oct. 2021. | |
| Paper # | AP2021-72 | |
| Date of Issue | 2021-09-30 (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 | AP2021-72 |
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| Conference Information | |
| Committee | AP |
| Conference Date | 2021-10-07 - 2021-10-08 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Student Session, Antennas and Propagation |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2021-10-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Improvement of Calculation Method of Arriving Waves from Road Direction by Constraint of Launched Rays |
| Sub Title (in English) | |
| Keyword(1) | Ray tracing |
| Keyword(2) | Mobile communication environment |
| Keyword(3) | Path search |
| Keyword(4) | Constraint of launched rays |
| Keyword(5) | |
| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Toshiki Shimizu |
| 1st Author's Affiliation | Doshisha University (Doshisha Univ) |
| 2nd Author's Name | Hisato Iwai |
| 2nd Author's Affiliation | Doshisha University (Doshisha Univ) |
| 3rd Author's Name | Shinsuke Ibi |
| 3rd Author's Affiliation | Doshisha University (Doshisha Univ) |
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| Speaker | Author-1 |
| Date Time | 2021-10-07 13:00:00 |
| Presentation Time | 75 minutes |
| Registration for | AP |
| Paper # | AP2021-72 |
| Volume (vol) | vol.121 |
| Number (no) | no.191 |
| Page | pp.24-25 |
| #Pages | 2 |
| Date of Issue | 2021-09-30 (AP) |
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