| タイトル | An FDMA system concept for 30/20 GHz high capacity domestic satellite service |
| 著者（英） | Rotholz, E.; Jean, P. N.; Berk, G.; White, B. E. |
| 著者所属（英） | Mitre Corp. |
| 発行日 | 1982-01-01 |
| 言語 | eng |
| 内容記述 | The paper summarizes a feasibility study of a multibeam FDMA satellite system operating in the 30/20 GHz band. The system must accommodate a very high volume of traffic within the restrictions of a 5 kW solar cell array and a 2.5 GHz bandwidth. Multibeam satellite operation reduces the DC power demand and allows reuse of the available bandwidth. Interferences among the beams are brought to acceptable levels by appropriate frequency assignments. A transponder design is presented; it is greatly simplified by the application of a regional concept. System analysis shows that MSK modulation is appropriate for a high-capacity system because it conserves the frequency spectrum. Rain attenuation, a serious problem in this frequency band, is combatted with sufficient power margins and with coding. Link budgets, cost analysis, and weight and power calculations are also discussed. A satellite-routed FDMA system compares favorably in performance and cost with a satellite-switched TDMA system. |
| NASA分類 | COMMUNICATIONS AND RADAR |
| レポートNO | 82A23484
AIAA PAPER 82-0447 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/411736 |
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