| Presentation | 2017-07-21 Demodulation Method of LPWA (Chirp Spread Spectrum)Signals and Multi-hop Transmisson Method Yoshihiko Takeuchi, Chun-Hao Liao, Makoto Suzuki, Hiroyuki Morikawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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) |
| Keyword(in English) | Internet of Things / Low Power Wide Area / chirp spread spectrum / CSS / multiplexing / concurrent transmission / multi-hop |
| Paper # | RCC2017-46,NS2017-63,RCS2017-138,SR2017-61,ASN2017-54 |
| Date of Issue | 2017-07-12 (RCC, NS, RCS, SR, ASN) |
| Conference Information | |
| Committee | NS / ASN / RCC / RCS / SR |
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| Conference Date | 2017/7/19(3days) |
| 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. |
| Chair | Hideki Tode(Osaka Pref. Univ.) / Hiraku Okada(Nagoya Univ.) / Shinsuke Hara(Osaka City Univ.) / Hidekazu Murata(Kyoto Univ.) / Kenta Umebayashi(Tokyo Univ. of Agric. and Tech.) |
| Vice Chair | Yoshikatsu Okazaki(NTT) / Shigeki Shiokawa(KAIT) / Jin Nakazawa(Keio Univ.) / Satoru Yamano(NEC) / Kazunori Hayashi(Osaka City Univ.) / Ryu Miura(NICT) / Yukitoshi Sanada(Keio Univ.) / Eisuke Fukuda(Fujitsu Labs.) / Satoshi Suyama(NTT DoCoMo) / Masayuki Ariyoshi(NEC) / Suguru Kameda(Tohoku Univ.) |
| Secretary | Yoshikatsu Okazaki(Kyushu Inst. of Tech.) / Shigeki Shiokawa(NTT) / Jin Nakazawa(NICT) / Satoru Yamano(Sophia Univ.) / Kazunori Hayashi(Kagawa Univ.) / Ryu Miura(Hokkaido Univ.) / Yukitoshi Sanada(Toshiba) / Eisuke Fukuda(Hokkaido Univ.) / Satoshi Suyama(NICT) / Masayuki Ariyoshi(ATR) / Suguru Kameda |
| Assistant | Kenichi Kashibuchi(NTT) / Hiroto Aida(Doshisha Univ.) / Tomoyuki Ota(Hiroshima City Univ.) / Tatsuya Kikuzuki(Fujitu Lab.) / Ryo Nakano(HITACHI) / Yoshifumi Hotta(Mitsubishi Electric) / Toshinori Kagawa(NICT) / Kentaro Kobayashi(Nagoya Univ.) / Tetsuya Yamamoto(Panasonic) / Koichi Ishihara(NTT) / Kazushi Muraoka(NEC) / Shinsuke Ibi(Osaka Univ.) / Hiroshi Nishimoto(Mitsubishi Electric) / Mamiko Inamori(Tokai Univ.) / Hiroyuki Shiba(NTT) / Gia Khanh Tran(Tokyo Inst. of Tech.) / Syusuke Narieda(NIT, Akashi College) |
| Paper Information | |
| Registration To | Technical Committee on Network Systems / Technical Committee on Ambient intelligence and Sensor Networks / Technical Committee on Reliable Communication and Control / Technical Committee on Radio Communication Systems / Technical Committee on Smart Radio |
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| Language | JPN |
| 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 |
| 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) |
| Date | 2017-07-21 |
| Paper # | RCC2017-46,NS2017-63,RCS2017-138,SR2017-61,ASN2017-54 |
| Volume (vol) | vol.117 |
| Number (no) | RCC-130,NS-131,RCS-132,SR-133,ASN-134 |
| Page | pp.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) |