{"title":"用于快速无线互联网和多媒体服务的QAM方案","authors":"B. Fong, G. Hong, A. Fong","doi":"10.1109/ICCE.2002.1013936","DOIUrl":null,"url":null,"abstract":"Wireless wideband communication systems provide high data transmission rates suitable for fast Internet access. This paper presents a modulation scheme for Local Multipoint Distribution Service (LMDS), which improves coverage under rainy weather conditions. Following a comparison of a number of modulation schemes with a 26 GHz carrier, a 16-QAM system is found to offer good compromise between coverage and receiver structure complexity. The effects of rain attenuation increase with carrier frequency. System performance varies significantly depending on whether the system is operated on a dry day or under heavy rain.","PeriodicalId":168349,"journal":{"name":"2002 Digest of Technical Papers. International Conference on Consumer Electronics (IEEE Cat. No.02CH37300)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2002-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"A QAM scheme for fast wireless Internet and multimedia services\",\"authors\":\"B. Fong, G. Hong, A. Fong\",\"doi\":\"10.1109/ICCE.2002.1013936\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Wireless wideband communication systems provide high data transmission rates suitable for fast Internet access. This paper presents a modulation scheme for Local Multipoint Distribution Service (LMDS), which improves coverage under rainy weather conditions. Following a comparison of a number of modulation schemes with a 26 GHz carrier, a 16-QAM system is found to offer good compromise between coverage and receiver structure complexity. The effects of rain attenuation increase with carrier frequency. System performance varies significantly depending on whether the system is operated on a dry day or under heavy rain.\",\"PeriodicalId\":168349,\"journal\":{\"name\":\"2002 Digest of Technical Papers. International Conference on Consumer Electronics (IEEE Cat. No.02CH37300)\",\"volume\":\"84 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2002-06-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2002 Digest of Technical Papers. International Conference on Consumer Electronics (IEEE Cat. No.02CH37300)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICCE.2002.1013936\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2002 Digest of Technical Papers. International Conference on Consumer Electronics (IEEE Cat. No.02CH37300)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICCE.2002.1013936","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A QAM scheme for fast wireless Internet and multimedia services
Wireless wideband communication systems provide high data transmission rates suitable for fast Internet access. This paper presents a modulation scheme for Local Multipoint Distribution Service (LMDS), which improves coverage under rainy weather conditions. Following a comparison of a number of modulation schemes with a 26 GHz carrier, a 16-QAM system is found to offer good compromise between coverage and receiver structure complexity. The effects of rain attenuation increase with carrier frequency. System performance varies significantly depending on whether the system is operated on a dry day or under heavy rain.
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