{"title":"HD-SAT modems for the satellite broadcasting in the 20 GHz frequency band","authors":"L. Combarel, E. Lavan, C. Dosch, J. Palicot","doi":"10.1109/ICCE.1995.517932","DOIUrl":null,"url":null,"abstract":"We present two satellite modems developed in the frame work of the European RACE II HD-SAT project. We describe the HD-SAT system by presenting briefly the overall system. The propagation conditions in the 20 GHz range are particularly detailed as well as the technical answer: the graceful degradation concept. We deal with the variable bit rate-TCM 8PSK modem. The features of this modem, mainly the variable bit rate possibilities between 85 and 70 Mb/s, are described. We describe the \"graceful degradation\" modem which uses a hierarchical modulation scheme with time multiplexed modulation.","PeriodicalId":306595,"journal":{"name":"Proceedings of International Conference on Consumer Electronics","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1995-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of International Conference on Consumer Electronics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICCE.1995.517932","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
We present two satellite modems developed in the frame work of the European RACE II HD-SAT project. We describe the HD-SAT system by presenting briefly the overall system. The propagation conditions in the 20 GHz range are particularly detailed as well as the technical answer: the graceful degradation concept. We deal with the variable bit rate-TCM 8PSK modem. The features of this modem, mainly the variable bit rate possibilities between 85 and 70 Mb/s, are described. We describe the "graceful degradation" modem which uses a hierarchical modulation scheme with time multiplexed modulation.
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