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| Presentation | 2017-07-21 13:20 Demodulation Method of LPWA (Chirp Spread Spectrum)Signals and Multi-hop Transmisson Method -- Proposal of a Packet Collision Avoidance of CSS Signals and CSS-Packet Forwarding Method -- Yoshihiko Takeuchi (JRC), Chun-Hao Liao, Makoto Suzuki, Hiroyuki Morikawa (The Univ. of Tokyo)  RCC2017-46 NS2017-63 RCS2017-138 SR2017-61 ASN2017-54 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In this work, we investigate a LPWA communication system that combines the chirp spread spectrum (CSS) and M-ary FSK modulation. We consider the matched filter (MF) has an effective CSS demodulator. The computational complexity of M-bank MF array with outputting only the data decision point is equivalent to the one MF implementation. Moreover, by using the MF, it is possible to achieve timing synchronization with an accuracy higher than the symbol time, which makes it feasible to be applied to sensor networks that require stringent concurrency. Furthermore, in order to improve the spectral efficiency of the M-ary FSK, we investigate a multiplexing scheme that uses multiple chirp signals. By inserting a timing lag longer than the inverse of the bandwidth, it is possible to separate the overlapped signal, and we propose a multi-hop concurrent transmission scheme with CSS. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Internet of Things / Low Power Wide Area / chirp spread spectrum / CSS / multiplexing / concurrent transmission / multi-hop / | |
| Reference Info. | IEICE Tech. Rep., vol. 117, no. 132, RCS2017-138, pp. 233-238, July 2017. | |
| Paper # | RCS2017-138 | |
| Date of Issue | 2017-07-12 (RCC, NS, RCS, SR, ASN) | |
| 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 | RCC2017-46 NS2017-63 RCS2017-138 SR2017-61 ASN2017-54 |
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| Conference Information | |
| Committee | NS ASN RCC RCS SR |
| Conference Date | 2017-07-19 - 2017-07-21 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hokkaido Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Wireless Distributed Network, M2M (Machine-to-Machine), D2D (Device-to-Device)，etc. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2017-07-NS-ASN-RCC-RCS-SR |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Demodulation Method of LPWA (Chirp Spread Spectrum)Signals and Multi-hop Transmisson Method |
| Sub Title (in English) | Proposal of a Packet Collision Avoidance of CSS Signals and CSS-Packet Forwarding Method |
| Keyword(1) | Internet of Things |
| Keyword(2) | Low Power Wide Area |
| Keyword(3) | chirp spread spectrum |
| Keyword(4) | CSS |
| Keyword(5) | multiplexing |
| Keyword(6) | concurrent transmission |
| Keyword(7) | multi-hop |
| Keyword(8) | |
| 1st Author's Name | Yoshihiko Takeuchi |
| 1st Author's Affiliation | Japan Radio Co., Ltd. (JRC) |
| 2nd Author's Name | Chun-Hao Liao |
| 2nd Author's Affiliation | The University of Tokyo (The Univ. of Tokyo) |
| 3rd Author's Name | Makoto Suzuki |
| 3rd Author's Affiliation | The University of Tokyo (The Univ. of Tokyo) |
| 4th Author's Name | Hiroyuki Morikawa |
| 4th Author's Affiliation | The University of Tokyo (The Univ. of Tokyo) |
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| Speaker | Author-1 |
| Date Time | 2017-07-21 13:20:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCC2017-46, NS2017-63, RCS2017-138, SR2017-61, ASN2017-54 |
| Volume (vol) | vol.117 |
| Number (no) | no.130(RCC), no.131(NS), no.132(RCS), no.133(SR), no.134(ASN) |
| Page | pp.179-184(RCC), pp.169-174(NS), pp.233-238(RCS), pp.191-196(SR), pp.205-210(ASN) |
| #Pages | 6 |
| Date of Issue | 2017-07-12 (RCC, NS, RCS, SR, ASN) |
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