| Presentation | 2000/6/20 Comparison of Multiple Access Schemes in Multibeam LEO Satellite Communication Systems Naoki ICHIKAWA, Masaaki KATAYAMA, Hiraku OKADA, Takaya YAMAZATO, Akira OGAWA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This study investigates a low earth-orbital satellite(LEOS)communication system with cellular concept, where each satellite uses multi-beam to form cells. In terrestrial systems, the power of a received desired / interfering signsl is mainly determined by the propagation loss, which is often modeled to be proportional to the fourth power of the propagation distance. On the contrary, in satellite systems, the loss varies as the square of distance and, in addition to the loss, the gain of the beam also affects the interference power. Because of this difference, the superiority or inferiority of multiple access schemes discussed on terrestrial systems may not be adopted for satellite systems. Thus in this manuscript, the performance of FDMA and CDMA for LEO and terrestrial systems are compared. As a result, it is found that the well-known statement for terrestrial system, i.e., CDMA is superior to FDMA, may not always stands for LEOS systems. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LEO / capacity / FDMA / CDMA |
| Paper # | SST2000-8,SAT2000-18 |
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| Conference Information | |
| Committee | SAT |
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| Conference Date | 2000/6/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Satellite Telecommunications (SAT) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Comparison of Multiple Access Schemes in Multibeam LEO Satellite Communication Systems |
| Sub Title (in English) | |
| Keyword(1) | LEO |
| Keyword(2) | capacity |
| Keyword(3) | FDMA |
| Keyword(4) | CDMA |
| 1st Author's Name | Naoki ICHIKAWA |
| 1st Author's Affiliation | Dept.of Information Electronics, Graduate School of Engineering, Nagoya University() |
| 2nd Author's Name | Masaaki KATAYAMA |
| 2nd Author's Affiliation | Dept.of Information Electronics, Graduate School of Engineering, Nagoya University |
| 3rd Author's Name | Hiraku OKADA |
| 3rd Author's Affiliation | Center for Information Media Studies, Nagoya University |
| 4th Author's Name | Takaya YAMAZATO |
| 4th Author's Affiliation | Center for Information Media Studies, Nagoya University |
| 5th Author's Name | Akira OGAWA |
| 5th Author's Affiliation | Dept.of Information Science, School of Science and Technology, Meijyo University |
| Date | 2000/6/20 |
| Paper # | SST2000-8,SAT2000-18 |
| Volume (vol) | vol.100 |
| Number (no) | 146 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |