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| Presentation | 2019-03-07 11:20 Iterative Separate Detection for Collided Packets over Space-based AIS Channels Seiya Shimizu, Yuyuan Chang, Kazuhiko Fukawa (Tokyo Tech), Daichi Hirahara (JAXA)  RCS2018-316 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Employing satellites makes Automatic Identification System (AIS) signals available across the open oceans. As such a satellite system, JAXA has conducted an experiment named Space-based AIS Experiment (SPAISE) in Japan where satellites equipped with AIS receivers have been launched, and observed AIS signals suffering from the Doppler shift. The results show that the wide coverage of the satellites causes a collision of multiple AIS signal packets, which degrades their transmission performance severely. To cope with such collided packets, a separate detection scheme using SIC (Successive Interference Cancellation) has been investigated. However, the scheme can hardly achieve desired bit error rates (BERs) because the accuracy of the channel parameter estimation is insufficient. Therefore, this report proposes a decision-directed scheme to estimate the channel parameters more accurately by calculating correlation between detected data signals plus known pilot signals with received signals. To improve the BER performance furthermore, multiple-symbol combined differential detection is used rather than the simple differential detection. Computer simulations under Rician fading conditions clarify the improvement of the proposed scheme. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Automatic Identification System (AIS) / Space-based AIS / correlation detection / SIC / decision-directed estimation / multiple-symbol combined differential detection / / | |
| Reference Info. | IEICE Tech. Rep., vol. 118, no. 474, RCS2018-316, pp. 181-186, March 2019. | |
| Paper # | RCS2018-316 | |
| Date of Issue | 2019-02-27 (RCS) | |
| ISSN | 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 | RCS2018-316 |
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| Conference Information | |
| Committee | RCS SR SRW |
| Conference Date | 2019-03-06 - 2019-03-08 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | YRP |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2019-03-RCS-SR-SRW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Iterative Separate Detection for Collided Packets over Space-based AIS Channels |
| Sub Title (in English) | |
| Keyword(1) | Automatic Identification System (AIS) |
| Keyword(2) | Space-based AIS |
| Keyword(3) | correlation detection |
| Keyword(4) | SIC |
| Keyword(5) | decision-directed estimation |
| Keyword(6) | multiple-symbol combined differential detection |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Seiya Shimizu |
| 1st Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 2nd Author's Name | Yuyuan Chang |
| 2nd Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 3rd Author's Name | Kazuhiko Fukawa |
| 3rd Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 4th Author's Name | Daichi Hirahara |
| 4th Author's Affiliation | Japan Aerospace Exploration Agency (JAXA) |
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| Speaker | Author-1 |
| Date Time | 2019-03-07 11:20:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2018-316 |
| Volume (vol) | vol.118 |
| Number (no) | no.474 |
| Page | pp.181-186 |
| #Pages | 6 |
| Date of Issue | 2019-02-27 (RCS) |
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