Paper Abstract and Keywords |
Presentation |
2007-08-23 13:30
Throughput evaluation of CSMA and CDMA slotted ALOHA in Inter-Vehicle communication Atsunori Sakata, Takaya Yamazato (Nagoya Univ.), Hiraku Okada (Niigata Univ.), Masaaki Katayama (Nagoya Univ.) RCS2007-55 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
This paper evaluate the throughput performance of a carrier-sense multiple access (CSMA) scheme that uses an orthogonal frequency division multiple access (OFDM) physical layer and a CDMA slotted ALOHA scheme based on multicarrier CDMA (MC-CDMA) in inter-vehicle communication (IVC).
In particular, we compare the throughputs in a situation where a hidden terminal is no longer negligible. We encounter such a situation in an intersection where two or more cars are crossing by. In a hidden terminal situation, the CSMA scheme may degrade throughput. On the other hand, CDMA slotted ALOHA has a resistance to the hidden terminal situation as it can support simultaneous packets. However, the transmission data rate is much slow because of the spreading. Thus the total throughput may not be as high as the CSMA based OFDM even in a hidden terminal situation.
As results, we show that the CSMA based OFDM system shows better total throughput than CDMA slotted ALOHA in all region. But, only the signal from the nearest car can be received. On the contrary, CDMA slotted ALOHA can receive many packets simultaneously. This is much preferable feature for safety driving. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Inter-vehicle communication / CSMA / hidden terminal problem / CDMA slotted ALOHA / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 107, no. 192, RCS2007-55, pp. 13-17, Aug. 2007. |
Paper # |
RCS2007-55 |
Date of Issue |
2007-08-16 (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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RCS2007-55 |
Conference Information |
Committee |
RCS AN |
Conference Date |
2007-08-23 - 2007-08-24 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Niigata University |
Topics (in Japanese) |
(See Japanese page) |
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Paper Information |
Registration To |
RCS |
Conference Code |
2007-08-RCS-AN |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Throughput evaluation of CSMA and CDMA slotted ALOHA in Inter-Vehicle communication |
Sub Title (in English) |
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Keyword(1) |
Inter-vehicle communication |
Keyword(2) |
CSMA |
Keyword(3) |
hidden terminal problem |
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CDMA slotted ALOHA |
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1st Author's Name |
Atsunori Sakata |
1st Author's Affiliation |
Nagoya University (Nagoya Univ.) |
2nd Author's Name |
Takaya Yamazato |
2nd Author's Affiliation |
Nagoya University (Nagoya Univ.) |
3rd Author's Name |
Hiraku Okada |
3rd Author's Affiliation |
Nagoya University (Niigata Univ.) |
4th Author's Name |
Masaaki Katayama |
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Nagoya University (Nagoya Univ.) |
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Speaker |
Author-1 |
Date Time |
2007-08-23 13:30:00 |
Presentation Time |
20 minutes |
Registration for |
RCS |
Paper # |
RCS2007-55 |
Volume (vol) |
vol.107 |
Number (no) |
no.192 |
Page |
pp.13-17 |
#Pages |
5 |
Date of Issue |
2007-08-16 (RCS) |
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