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Paper Abstract and Keywords
Presentation 2014-03-03 09:30
Frame Collision Detection System for Wireless LAN and its Performance Evaluation
Peng Shao, Akira Matsumoto, Yuki Baba (NCOS) RCS2013-315
Abstract (in Japanese) (See Japanese page) 
(in English) With the increase of wireless local area networks (WLAN) using the IEEE 802.11 protocol, the interference between WLAN devices has become a significant problem. Access control in IEEE 802.11 is based on Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA). However CSMA/CA cannot avoid interference completely because it is possible for different devices to initiate transmissions simultaneously after Clear Channel Assessment (CCA), and because there may be interference from transmissions that are too weak to be detected by the CCA. Moreover, because the IEEE 802.11 has no function to distinguish the reason for transmission failure, appropriate counter-measures cannot be taken. In order to alleviate these problems, a method was proposed for collision detection by transmitting stations in wireless LAN, based on analysis of power signals of test frames. In this paper, we propose a novel collision detection system, expanding the collision detection targets from the test frames to the normal data frames, which can detect frame collisions under variable conditions of frame transmission power, frame sizes and frame transmission rates. Performance of the proposed method was evaluated using collision signals obtained in experiments.
Keyword (in Japanese) (See Japanese page) 
(in English) Wireless LAN / CSMA/CA / Collision Detection / Collision Rate / Cognitive Radio / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 456, RCS2013-315, pp. 55-60, March 2014.
Paper # RCS2013-315 
Date of Issue 2014-02-24 (RCS) 
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. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee RCS SR SRW  
Conference Date 2014-03-03 - 2014-03-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Waseda Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To RCS 
Conference Code 2014-03-RCS-SR-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Frame Collision Detection System for Wireless LAN and its Performance Evaluation 
Sub Title (in English)  
Keyword(1) Wireless LAN  
Keyword(2) CSMA/CA  
Keyword(3) Collision Detection  
Keyword(4) Collision Rate  
Keyword(5) Cognitive Radio  
1st Author's Name Peng Shao  
1st Author's Affiliation NEC Communication Systems, Ltd. (NCOS)
2nd Author's Name Akira Matsumoto  
2nd Author's Affiliation NEC Communication Systems, Ltd. (NCOS)
3rd Author's Name Yuki Baba  
3rd Author's Affiliation NEC Communication Systems, Ltd. (NCOS)
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Date Time 2014-03-03 09:30:00 
Presentation Time 20 
Registration for RCS 
Paper # IEICE-RCS2013-315 
Volume (vol) IEICE-113 
Number (no) no.456 
Page pp.55-60 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2014-02-24 

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