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Paper Abstract and Keywords
Presentation 2014-09-12 09:35
Effectiveness of synchronous random access control scheme in MU-MIMO
Yoshiaki Morino, Toshiyuki Ogawa (Nippon Inst. of Tech.), Kentaro Nishimori (Niigata Univ.), Takefumi Hiraguri (Nippon Inst. of Tech.) CQ2014-56
Abstract (in Japanese) (See Japanese page) 
(in English) he Multi-User Multiple Input Multiple Output (MU-MIMO) transmission technology has been standardized in the Wireless Local Area Network (WLAN) of IEEE802.11ac standard. MU-MIMO is will achieve very-high-speed transmission link rate. Moreover, this technology can transmit differential data to multiple users (terminals) concurrently by using Space Division Multiple Access (SDMA).
However, if MU-MIMO is used in WLAN, there are some issues. One of issues is delay of data generation time, because data of multi user are not generated concurrently. Second of issues is delay of channel estimation time. These delay time are overheads in transmission procedure, and transmission efficiency will be degraded. In order to resolve these issues, channel estimation processing is immediately performed when initial data was generated. The
synchronous random access scheme is proposed in order to decrease overhead time.
In this paper, band occupancy rate was evaluated of conventional and proposed scheme, and examined the scope of the proposed scheme.
Keyword (in Japanese) (See Japanese page) 
(in English) Wireless LAN / MU-MIMO / Access control / / / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 209, CQ2014-56, pp. 97-100, Sept. 2014.
Paper # CQ2014-56 
Date of Issue 2014-09-04 (CQ) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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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 MoNA CQ  
Conference Date 2014-09-11 - 2014-09-12 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
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Paper Information
Registration To CQ 
Conference Code 2014-09-MoNA-CQ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Effectiveness of synchronous random access control scheme in MU-MIMO 
Sub Title (in English)  
Keyword(1) Wireless LAN  
Keyword(2) MU-MIMO  
Keyword(3) Access control  
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1st Author's Name Yoshiaki Morino  
1st Author's Affiliation Nippon Institute of Technology (Nippon Inst. of Tech.)
2nd Author's Name Toshiyuki Ogawa  
2nd Author's Affiliation Nippon Institute of Technology (Nippon Inst. of Tech.)
3rd Author's Name Kentaro Nishimori  
3rd Author's Affiliation Niigata University (Niigata Univ.)
4th Author's Name Takefumi Hiraguri  
4th Author's Affiliation Nippon Institute of Technology (Nippon Inst. of Tech.)
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Speaker Author-1 
Date Time 2014-09-12 09:35:00 
Presentation Time 20 minutes 
Registration for CQ 
Paper # CQ2014-56 
Volume (vol) vol.114 
Number (no) no.209 
Page pp.97-100 
#Pages
Date of Issue 2014-09-04 (CQ) 


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