| Presentation | 2019-05-31 [Technology Exhibit] QZSS short message SS-CDMA communication system Hiroshi Oguma, Rei Kawai, Takumi Shimada, Takeshi Asai, Mizuki Motoyoshi, Suguru Kameda, Noriharu Suematsu, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have proposed Spread Spectrum Code Division Multiple Access (SS-CDMA) short message communicationusing Quasi-Zenith Satellite System (QZSS) for safety confirmation system at the time of large disaster. The proposed systemcontrols the transmission timing using highly accurate time and position information obtained from the QZSS. In order torealize the proposed system, we evaluate the time synchronization accuracy. In this paper, the architecture result of a transmittingtiming control system is described, and the transmitting timing control error is evaluated. As a result of evaluating t transmittingtiming control error, the clock-frequency errors needed are less than 5 ppm. It is found that sufficient timing control accuracy forproposal system implementation is obtainable. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Satellite Communication / Quasi-Zenith Satellite System (QZSS) / Global Positioning System (GPS) / Spread Spectrum (SS) / Code-Division Multiple-Access (CDMA) / Field Programmable Gate Array (FPGA) |
| Paper # | SR2019-12 |
| Date of Issue | 2019-05-23 (SR) |
| Conference Information | |
| Committee | SR |
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| Conference Date | 2019/5/30(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo Big Sight |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Technical Exhibition, LPWA, General |
| Chair | Kenta Umebayashi(Tokyo Univ. of Agric. and Tech.) |
| Vice Chair | Masayuki Ariyoshi(NEC) / Suguru Kameda(Tohoku Univ.) |
| Secretary | Masayuki Ariyoshi(NICT) / Suguru Kameda(ATR) |
| Assistant | Gia Khanh Tran(Tokyo Inst. of Tech.) / Syusuke Narieda(Mie Univ.) / Koji Ohshima(Kozo Keikaku Engineering) / Mai Ohta(Fukuoka Univ.) / Teppei Oyama(Fujitsu Lab.) |
| Paper Information | |
| Registration To | 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) | [Technology Exhibit] QZSS short message SS-CDMA communication system |
| Sub Title (in English) | Evaluation of transmitting timing control error |
| Keyword(1) | Satellite Communication |
| Keyword(2) | Quasi-Zenith Satellite System (QZSS) |
| Keyword(3) | Global Positioning System (GPS) |
| Keyword(4) | Spread Spectrum (SS) |
| Keyword(5) | Code-Division Multiple-Access (CDMA) |
| Keyword(6) | Field Programmable Gate Array (FPGA) |
| 1st Author's Name | Hiroshi Oguma |
| 1st Author's Affiliation | NIT, Toyama(NIT, Toyama) |
| 2nd Author's Name | Rei Kawai |
| 2nd Author's Affiliation | NIT, Toyama(NIT, Toyama) |
| 3rd Author's Name | Takumi Shimada |
| 3rd Author's Affiliation | NIT, Toyama(NIT, Toyama) |
| 4th Author's Name | Takeshi Asai |
| 4th Author's Affiliation | Next-Dimension Co. Ltd(Next-Dimension) |
| 5th Author's Name | Mizuki Motoyoshi |
| 5th Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 6th Author's Name | Suguru Kameda |
| 6th Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 7th Author's Name | Noriharu Suematsu |
| 7th Author's Affiliation | Tohoku University(Tohoku Univ.) |
| Date | 2019-05-31 |
| Paper # | SR2019-12 |
| Volume (vol) | vol.119 |
| Number (no) | SR-62 |
| Page | pp.pp.71-77(SR), |
| #Pages | 7 |
| Date of Issue | 2019-05-23 (SR) |