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| Presentation | 2013-09-13 10:35 A study on electromagnetic interference to telecommunication equipment due to WiFi radio waves Norihito Hirasawa, Ken Okamoto, Hidenori Itou, Masashi Takahashi (NTT East), Yuichiro Okugawa, Yoshiharu Akiyama (NTT), Kazuo Murakawa (NTT East)  EMCJ2013-49 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Wireless communication services can be used at various places by development of wireless communication technologies. To make maintenance works be more efficient, telecommunication operator requests for using the wireless communication devices, such as a tablet PC, in machine rooms of telecommunication center and data center where wireless communication devices are not permitted to use. So, it is necessary to evaluate the immunity levels of the telecommunication equipment is enough higher than electromagnetic field strength of transmitting wave from the wireless communication devices to use the devices in the machine room. In the international standard, narrow band signal that is 1 kHz tone 80% amplitude modulation (AM) signal which simulates the radio wave is used as the test signals. On the contrary, wide band signals such as an OFDM signal are currently used for wireless communication devices. In this report, we compared radiated electromagnetic field immunity test results against several types of telecommunications equipment by using the wireless LAN signal and 1 kHz tone 80% AM signal. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Wireless LAN / telecommunication equipment / broadband signal / OFDM / immunity / EMI / / | |
| Reference Info. | IEICE Tech. Rep., vol. 113, no. 218, EMCJ2013-49, pp. 1-5, Sept. 2013. | |
| Paper # | EMCJ2013-49 | |
| Date of Issue | 2013-09-06 (EMCJ) | |
| ISSN | Print edition: ISSN 0913-5685 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 | EMCJ2013-49 |
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| Conference Information | |
| Committee | EMCJ |
| Conference Date | 2013-09-13 - 2013-09-13 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hokkaido Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Biomedical EMC, etc. |
| Paper Information | |
| Registration To | EMCJ |
| Conference Code | 2013-09-EMCJ |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A study on electromagnetic interference to telecommunication equipment due to WiFi radio waves |
| Sub Title (in English) | |
| Keyword(1) | Wireless LAN |
| Keyword(2) | telecommunication equipment |
| Keyword(3) | broadband signal |
| Keyword(4) | OFDM |
| Keyword(5) | immunity |
| Keyword(6) | EMI |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Norihito Hirasawa |
| 1st Author's Affiliation | Nippon Telegraph and Telephone East Corporation (NTT East) |
| 2nd Author's Name | Ken Okamoto |
| 2nd Author's Affiliation | Nippon Telegraph and Telephone East Corporation (NTT East) |
| 3rd Author's Name | Hidenori Itou |
| 3rd Author's Affiliation | Nippon Telegraph and Telephone East Corporation (NTT East) |
| 4th Author's Name | Masashi Takahashi |
| 4th Author's Affiliation | Nippon Telegraph and Telephone East Corporation (NTT East) |
| 5th Author's Name | Yuichiro Okugawa |
| 5th Author's Affiliation | Nippon Telegraph and Telephone Corporation (NTT) |
| 6th Author's Name | Yoshiharu Akiyama |
| 6th Author's Affiliation | Nippon Telegraph and Telephone Corporation (NTT) |
| 7th Author's Name | Kazuo Murakawa |
| 7th Author's Affiliation | Nippon Telegraph and Telephone East Corporation (NTT East) |
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| Speaker | 1 |
| Date Time | 2013-09-13 10:35:00 |
| Presentation Time | 25 |
| Registration for | EMCJ |
| Paper # | IEICE-EMCJ2013-49 |
| Volume (vol) | IEICE-113 |
| Number (no) | no.218 |
| Page | pp.1-5 |
| #Pages | IEICE-5 |
| Date of Issue | IEICE-EMCJ-2013-09-06 |
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