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Paper Abstract and Keywords
Presentation 2014-06-17 10:53
Inversely Proportional Setting of Transmission Power and Carrier Sense Threshold for WLAN Throughput Improvement
Fumiya Shiotani, Koji Yamamoto, Takayuki Nishio, Masahiro Morikura (Kyoto Univ.), Riichi Kudo, Koichi Ishihara (NTT) RCS2014-45
Abstract (in Japanese) (See Japanese page) 
(in English) Inserting attenuators between transceivers and antennas is proposed to improve spacial channel reuse in carrier sense multiple access with collision avoidance (CSMA/CA)-based wireless LANs.
Using attenuators enables the access points (APs) or stations to equivalently decrease the powers of transmission signals and received signals. The decrease of the received signals is equivalent to the increase of the carrier sense threshold at the transceiver.
This inversely proportional setting of transmission power and carrier sense threshold provides a novel solution for the unfairness problem caused by the difference in transmission power.
The aggregated spectral efficiency of two transmitter-receiver pairs is formulated and a sufficient condition for achieving higher aggregated spectral efficiency compared to the spectral efficiency without using attenuators is derived.
In addition, the enhancement of aggregated spectral efficiency is numerically evaluated.
Keyword (in Japanese) (See Japanese page) 
(in English) CSMA/CA / IEEE 802.11 / attenuator / transmission power control / carrier sense threshold / channel reuse / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 86, RCS2014-45, pp. 77-80, June 2014.
Paper # RCS2014-45 
Date of Issue 2014-06-10 (RCS) 
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 RCS2014-45

Conference Information
Committee RCS  
Conference Date 2014-06-17 - 2014-06-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa-ken Seinenkaikan (Naha) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2014-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Inversely Proportional Setting of Transmission Power and Carrier Sense Threshold for WLAN Throughput Improvement 
Sub Title (in English)  
Keyword(1) CSMA/CA  
Keyword(2) IEEE 802.11  
Keyword(3) attenuator  
Keyword(4) transmission power control  
Keyword(5) carrier sense threshold  
Keyword(6) channel reuse  
Keyword(7)  
Keyword(8)  
1st Author's Name Fumiya Shiotani  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Koji Yamamoto  
2nd Author's Affiliation Kyoto University (Kyoto Univ.)
3rd Author's Name Takayuki Nishio  
3rd Author's Affiliation Kyoto University (Kyoto Univ.)
4th Author's Name Masahiro Morikura  
4th Author's Affiliation Kyoto University (Kyoto Univ.)
5th Author's Name Riichi Kudo  
5th Author's Affiliation NIPPON TELEGRAPH AND TELEPHONE CORPORATION (NTT)
6th Author's Name Koichi Ishihara  
6th Author's Affiliation NIPPON TELEGRAPH AND TELEPHONE CORPORATION (NTT)
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Speaker Author-1 
Date Time 2014-06-17 10:53:00 
Presentation Time 8 minutes 
Registration for RCS 
Paper # RCS2014-45 
Volume (vol) vol.114 
Number (no) no.86 
Page pp.77-80 
#Pages 4 
Date of Issue 2014-06-10 (RCS) 

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