Paper Abstract and Keywords |
Presentation |
2008-10-23 10:45
A Study on CSMA/CA using Dynamic Subcarrier Selection for Multi-hop Wireless Networks Yuichi Goda, Shinichi Miyamoto, Seiichi Sampei (Osaka Univ.) RCS2008-115 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
In multi-hop wireless networks using CSMA/CA protocol, retransmission of data packets according to decode-and-forward method and the intra-flow contention between multiple wireless nodes transmitting the same flow cause the degradation in transmission performance. In order to improve the transmission performance of multi-hop wireless networks using CSMA/CA and OFDM modulation scheme, this paper proposes dynamic subcarrier selection technique and MAC layer protocol for multi-hop wireless networks. In the proposed technique, each wireless node first senses the entire subcarriers and locates the available subcarriers based on a carrier sensing. After each node locates the available subcarriers, each node estimates the channel condition of available subcarriers and assembles discrete subcarriers having good channel
conditions for transmission of data packets. In the proposed technique, because the data packets can be transmitted by using subcarriers having good channel conditions, packet error rates in each hop and spectrum efficiency will be improved. In addition, because all subcarriers are not used only by one link, multiple nodes can get the transmission opportunity at the same time, and the degradation in transmission performance due to intra-flow contention will be solved. Numerical results show that the throughput of multi-hop wireless networks can be much improved by using proposed technique. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Multi-hopWireless Networks / MAC / CSMA/CA / Dynamic Subcarrier Selection / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 108, no. 249, RCS2008-115, pp. 75-80, Oct. 2008. |
Paper # |
RCS2008-115 |
Date of Issue |
2008-10-15 (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) |
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RCS2008-115 |
Conference Information |
Committee |
SR RCS USN AN |
Conference Date |
2008-10-22 - 2008-10-24 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Okinawa industry support center |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Wireless discributed network special session and general session |
Paper Information |
Registration To |
RCS |
Conference Code |
2008-10-SR-RCS-USN-AN |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
A Study on CSMA/CA using Dynamic Subcarrier Selection for Multi-hop Wireless Networks |
Sub Title (in English) |
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Keyword(1) |
Multi-hopWireless Networks |
Keyword(2) |
MAC |
Keyword(3) |
CSMA/CA |
Keyword(4) |
Dynamic Subcarrier Selection |
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1st Author's Name |
Yuichi Goda |
1st Author's Affiliation |
Osaka University (Osaka Univ.) |
2nd Author's Name |
Shinichi Miyamoto |
2nd Author's Affiliation |
Osaka University (Osaka Univ.) |
3rd Author's Name |
Seiichi Sampei |
3rd Author's Affiliation |
Osaka University (Osaka Univ.) |
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Speaker |
Author-1 |
Date Time |
2008-10-23 10:45:00 |
Presentation Time |
20 minutes |
Registration for |
RCS |
Paper # |
RCS2008-115 |
Volume (vol) |
vol.108 |
Number (no) |
no.249 |
Page |
pp.75-80 |
#Pages |
6 |
Date of Issue |
2008-10-15 (RCS) |
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