| Presentation | 2013-08-30 Perfomance Evaluation of QZSS Short Message Communication SS-CDMA with Transmit Timing Error Akinori TAIRA, Yuji MIYAKE, Suguru KAMEDA, Noriharu SUEMATSU, Tadashi TAKAGI, Kazuo TSUBOUCHI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Quasi-Zenith Satellite System (QZSS) is expected to provide a high accurate positioning service and allows two-way communication which includes the terminal position information and short messages. In this paper, SS-CDMA system performance with timing jitter among terminals is evaluated. SS-CDMA realizes the direct access from terminals to the satellite and many users simultaneous transmission using large spreading factor SS-codes. In order to achieve this objective, keeping orthogonality among all terminals is important condition. We propose a novel transmit timing control method in which all terminals are synchronized in time and frequency domains using QZSS. BER performances in 1024 chip SS-code and 1000 user multiplexing condition are shown. Each user is assigned 1 chip rotational shift SS-code based on an orthogonal M-sequence. 1/8 chip timing jitter can provides the performance with less than 0.5 dB E_b/N_0 degradation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Quasi-Zenith Satellite System (QZSS) / satellite communication / Global Positioning System (GPS) / Spread Spectrum Code Division Multiple Access (SS-CDMA) / timing synchronization |
| Paper # | RCS2013-132 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2013/8/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Radio Communication Systems (RCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Perfomance Evaluation of QZSS Short Message Communication SS-CDMA with Transmit Timing Error |
| Sub Title (in English) | |
| Keyword(1) | Quasi-Zenith Satellite System (QZSS) |
| Keyword(2) | satellite communication |
| Keyword(3) | Global Positioning System (GPS) |
| Keyword(4) | Spread Spectrum Code Division Multiple Access (SS-CDMA) |
| Keyword(5) | timing synchronization |
| 1st Author's Name | Akinori TAIRA |
| 1st Author's Affiliation | Research Institute of Electrical Communication, Tohoku University() |
| 2nd Author's Name | Yuji MIYAKE |
| 2nd Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
| 3rd Author's Name | Suguru KAMEDA |
| 3rd Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
| 4th Author's Name | Noriharu SUEMATSU |
| 4th Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
| 5th Author's Name | Tadashi TAKAGI |
| 5th Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
| 6th Author's Name | Kazuo TSUBOUCHI |
| 6th Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
| Date | 2013-08-30 |
| Paper # | RCS2013-132 |
| Volume (vol) | vol.113 |
| Number (no) | 194 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |