| タイトル | Effects of data asymmetry on Shuttle Ku-band communications link performance |
| 著者（英） | Simon, M. K.; Batson, B. H.; Tu, K. |
| 著者所属（英） | NASA Johnson Space Center|Jet Propulsion Lab., California Inst. of Tech.|Lockheed Electronics Co. |
| 発行日 | 1978-11-01 |
| 言語 | eng |
| 内容記述 | This paper systematically analyzes the signal-to-noise ratio degradations which can potentially occur due to data asymmetry in digital transmission systems. Suitable asymmetry models are developed and error probability performance for various types of data detectors (integrate-and-dump filter, filter-sample detector, and gated-integrate-and-dump filter) is derived. Although this work was done to resolve problems being encountered in the Shuttle Ku-band return link design, specifically for the 50 Mbit/s convolutionally encoded channel (NRZ format), generalizations are made which provide results for other cases of interest (other Ku-band return link channels, or other systems entirely). This paper therefore considers Manchester data formats (in addition to NRZ) and uncoded transmission (in addition to convolutionally coded transmission). The effects of bandlimiting are also considered. |
| NASA分類 | SPACE COMMUNICATIONS, SPACECRAFT COMMUNICATIONS, COMMAND AND TRACKING |
| レポートNO | 79A19865 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/428787 |
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