{"title":"140 Mbit/s 32QAM交叉极化共频试验结果","authors":"U. Casiraghi, L. Saini, P. Vitali","doi":"10.1109/ICC.1992.267993","DOIUrl":null,"url":null,"abstract":"The frequency reuse technique can be adopted for doubling the capacity (bits/hertz) of digital radio systems. The newly developed 140-Mb/s 32QAM (quadrature amplitude modulation) Telettra modems equipped with a cross polar interference canceller (XPIC) have been tested successfully on a 60-km 4-GHz link in the north of Italy. The authors present the main results observed during the period of August-December 1991. The performance of a 2*140 Mb/s 32QAM system is comparable to that of a 1*140 Mb/s 16QAM system in the same conditions. The good XPIC performance in terms of outage probability reduction and sync-recovering speed shows the soundness of design and construction technologies.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"60 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"140 Mbit/s 32QAM cross-polarized co-frequency trial results\",\"authors\":\"U. Casiraghi, L. Saini, P. Vitali\",\"doi\":\"10.1109/ICC.1992.267993\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The frequency reuse technique can be adopted for doubling the capacity (bits/hertz) of digital radio systems. The newly developed 140-Mb/s 32QAM (quadrature amplitude modulation) Telettra modems equipped with a cross polar interference canceller (XPIC) have been tested successfully on a 60-km 4-GHz link in the north of Italy. The authors present the main results observed during the period of August-December 1991. The performance of a 2*140 Mb/s 32QAM system is comparable to that of a 1*140 Mb/s 16QAM system in the same conditions. The good XPIC performance in terms of outage probability reduction and sync-recovering speed shows the soundness of design and construction technologies.<<ETX>>\",\"PeriodicalId\":170618,\"journal\":{\"name\":\"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications\",\"volume\":\"60 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1992-06-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICC.1992.267993\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICC.1992.267993","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The frequency reuse technique can be adopted for doubling the capacity (bits/hertz) of digital radio systems. The newly developed 140-Mb/s 32QAM (quadrature amplitude modulation) Telettra modems equipped with a cross polar interference canceller (XPIC) have been tested successfully on a 60-km 4-GHz link in the north of Italy. The authors present the main results observed during the period of August-December 1991. The performance of a 2*140 Mb/s 32QAM system is comparable to that of a 1*140 Mb/s 16QAM system in the same conditions. The good XPIC performance in terms of outage probability reduction and sync-recovering speed shows the soundness of design and construction technologies.<>
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