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Paper Abstract and Keywords
Presentation 2016-03-08 13:35
Experiment on Coexistence Scheme for Wireless LAN System with Microwave Power Transmission
Shota Yamashita, Koichi Sakaguchi, Yong Huang, Koji Yamamoto, Takayuki Nishio, Masahiro Morikura, Naoki Shinohara (Kyoto Univ.) WPT2015-92
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we investigate the feasibility of using microwave power transmission (MPT) for batteryless operation of a wireless local area network (WLAN) station on the assumption that MPT is operated in the same frequency band as that for WLAN. In this situation, even when the station employs a carrier sense mechanism, disassociation from the access point (AP) and throughput degradation could occur due to interference. To solve these problems, we propose time division and rate adaptation schemes. In the time division scheme, both microwave power and data transmissions are not performed simultaneously. In the scheme, an energy source transmits microwave power to a WLAN station except when the station transmits data or receives beacon messages. Using a time division system based on the proposed scheme, we confirm the expected performance of the system. The rate adaptation scheme mitigates physical (PHY) layer data rate reduction and improves throughput. A WLAN station based on the proposed scheme assesses whether exposure to microwave radiation for MPT using rectenna output. Then, using historical data corresponding to the assessment results, the station selects a PHY data rate. We evaluate the throughput performance of the proposed scheme. The results confirm that the proposed scheme successfully mitigates the PHY data rate reduction and thus improves throughput.
Keyword (in Japanese) (See Japanese page) 
(in English) Microwave power transmission / batteryless / wireless local area network / time division scheme / rate adaptation / rectenna / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 498, WPT2015-92, pp. 85-90, March 2016.
Paper # WPT2015-92 
Date of Issue 2016-02-29 (WPT) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee WPT  
Conference Date 2016-03-07 - 2016-03-08 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyoto Univ. Uji Campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Power Transfer, SPS Technology, etc 
Paper Information
Registration To WPT 
Conference Code 2016-03-WPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Experiment on Coexistence Scheme for Wireless LAN System with Microwave Power Transmission 
Sub Title (in English)  
Keyword(1) Microwave power transmission  
Keyword(2) batteryless  
Keyword(3) wireless local area network  
Keyword(4) time division scheme  
Keyword(5) rate adaptation  
Keyword(6) rectenna  
1st Author's Name Shota Yamashita  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Koichi Sakaguchi  
2nd Author's Affiliation Kyoto University (Kyoto Univ.)
3rd Author's Name Yong Huang  
3rd Author's Affiliation Kyoto University (Kyoto Univ.)
4th Author's Name Koji Yamamoto  
4th Author's Affiliation Kyoto University (Kyoto Univ.)
5th Author's Name Takayuki Nishio  
5th Author's Affiliation Kyoto University (Kyoto Univ.)
6th Author's Name Masahiro Morikura  
6th Author's Affiliation Kyoto University (Kyoto Univ.)
7th Author's Name Naoki Shinohara  
7th Author's Affiliation Kyoto University (Kyoto Univ.)
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Date Time 2016-03-08 13:35:00 
Presentation Time 25 
Registration for WPT 
Paper # IEICE-WPT2015-92 
Volume (vol) IEICE-115 
Number (no) no.498 
Page pp.85-90 
#Pages IEICE-6 
Date of Issue IEICE-WPT-2016-02-29 

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