{"title":"用于超宽带通信的高阶n音σ - δ调制器分析","authors":"K. Chang, G. Sobelman, E. Saberinia, A. Tewfik","doi":"10.1109/ISCAS.2004.1328953","DOIUrl":null,"url":null,"abstract":"We consider the properties of a class of non-oversampling N-tone sigma-delta modulators which have applications in the design of UWB-OFDM communications systems. The spectrum gaps that exist in such systems are well-matched to the noise shaping properties of these modulators and their non-oversampling nature makes them practical for use with these ultra wideband signals. Performance results for first-order, second-order and L/sup th/-order modulators are presented, and a general expression for the excess resolution that can be gained in such systems is obtained.","PeriodicalId":6445,"journal":{"name":"2004 IEEE International Symposium on Circuits and Systems (IEEE Cat. No.04CH37512)","volume":"411 1","pages":"IV-113"},"PeriodicalIF":0.0000,"publicationDate":"2004-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Analysis of higher-order N-tone sigma-delta modulators for ultra wideband communications\",\"authors\":\"K. Chang, G. Sobelman, E. Saberinia, A. Tewfik\",\"doi\":\"10.1109/ISCAS.2004.1328953\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We consider the properties of a class of non-oversampling N-tone sigma-delta modulators which have applications in the design of UWB-OFDM communications systems. The spectrum gaps that exist in such systems are well-matched to the noise shaping properties of these modulators and their non-oversampling nature makes them practical for use with these ultra wideband signals. Performance results for first-order, second-order and L/sup th/-order modulators are presented, and a general expression for the excess resolution that can be gained in such systems is obtained.\",\"PeriodicalId\":6445,\"journal\":{\"name\":\"2004 IEEE International Symposium on Circuits and Systems (IEEE Cat. No.04CH37512)\",\"volume\":\"411 1\",\"pages\":\"IV-113\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2004-05-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2004 IEEE International Symposium on Circuits and Systems (IEEE Cat. No.04CH37512)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ISCAS.2004.1328953\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2004 IEEE International Symposium on Circuits and Systems (IEEE Cat. No.04CH37512)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISCAS.2004.1328953","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Analysis of higher-order N-tone sigma-delta modulators for ultra wideband communications
We consider the properties of a class of non-oversampling N-tone sigma-delta modulators which have applications in the design of UWB-OFDM communications systems. The spectrum gaps that exist in such systems are well-matched to the noise shaping properties of these modulators and their non-oversampling nature makes them practical for use with these ultra wideband signals. Performance results for first-order, second-order and L/sup th/-order modulators are presented, and a general expression for the excess resolution that can be gained in such systems is obtained.
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