| タイトル | On-board processing for future satellite communications systems: Satellite-Routed FDMA |
| 本文（外部サイト） | http://hdl.handle.net/2060/19810024825 |
| 著者（英） | Berk, G.; Jean, P. N.; Hoffman, M.; Christopher, P. F.; White, B. E.; Rotholz, E. |
| 著者所属（英） | Mitre Corp. |
| 発行日 | 1981-05-01 |
| 言語 | eng |
| 内容記述 | A frequency division multiple access (FDMA) 30/20 GHz satellite communications architecture without on-board baseband processing is investigated. Conceptual system designs are suggested for domestic traffic models totaling 4 Gb/s of customer premises service (CPS) traffic and 6 Gb/s of trunking traffic. Emphasis is given to the CPS portion of the system which includes thousands of earth terminals with digital traffic ranging from a single 64 kb/s voice channel to hundreds of channels of voice, data, and video with an aggregate data rate of 33 Mb/s. A unique regional design concept that effectively smooths the non-uniform traffic distribution and greatly simplifies the satellite design is employed. The satellite antenna system forms thirty-two 0.33 deg beam on both the uplinks and the downlinks in one design. In another design matched to a traffic model with more dispersed users, there are twenty-four 0.33 deg beams and twenty-one 0.7 deg beams. Detailed system design techniques show that a single satellite producing approximately 5 kW of dc power is capable of handling at least 75% of the postulated traffic. A detailed cost model of the ground segment and estimated system costs based on current information from manufacturers are presented. |
| NASA分類 | COMMUNICATIONS AND RADAR |
| レポートNO | 81N33368
MTR-8311
NASA/LERC-C-49029-D
NASA-CR-165419 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/167923 |
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