{"title":"先进的CDMA传输概念，用于3G和4G移动无线电通信","authors":"P. W. Baier, M. Meurer","doi":"10.1109/ISSSTA.2004.1371771","DOIUrl":null,"url":null,"abstract":"CDMA techniques are widely used in 3G mobile radio systems, and this can be also expected for the fourth generation of mobile radio communications. CDMA offers the advantages of frequency diversity, interferer diversity and flexibility. Unfortunately, these advantages go along with the problem of signal separation typical of CDMA, which hampers spectral efficiency and capacity. In the paper some possibilities to mitigate this problem and to thus enhance CDMA performance are shown. These possibilities include CDMA signal separation based on the turbo principle, the application of multi-element antennas at the base stations in combination with nonlinear signal processing, and an alternative to conventional cellular structures exploiting the spatial separation of the mobile terminals.","PeriodicalId":340769,"journal":{"name":"Eighth IEEE International Symposium on Spread Spectrum Techniques and Applications - Programme and Book of Abstracts (IEEE Cat. No.04TH8738)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2004-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":"{\"title\":\"Advanced CDMA transmission concepts for 3G and 4G mobile radio communications\",\"authors\":\"P. W. Baier, M. Meurer\",\"doi\":\"10.1109/ISSSTA.2004.1371771\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"CDMA techniques are widely used in 3G mobile radio systems, and this can be also expected for the fourth generation of mobile radio communications. CDMA offers the advantages of frequency diversity, interferer diversity and flexibility. Unfortunately, these advantages go along with the problem of signal separation typical of CDMA, which hampers spectral efficiency and capacity. In the paper some possibilities to mitigate this problem and to thus enhance CDMA performance are shown. These possibilities include CDMA signal separation based on the turbo principle, the application of multi-element antennas at the base stations in combination with nonlinear signal processing, and an alternative to conventional cellular structures exploiting the spatial separation of the mobile terminals.\",\"PeriodicalId\":340769,\"journal\":{\"name\":\"Eighth IEEE International Symposium on Spread Spectrum Techniques and Applications - Programme and Book of Abstracts (IEEE Cat. No.04TH8738)\",\"volume\":\"17 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2004-08-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Eighth IEEE International Symposium on Spread Spectrum Techniques and Applications - Programme and Book of Abstracts (IEEE Cat. No.04TH8738)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ISSSTA.2004.1371771\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Eighth IEEE International Symposium on Spread Spectrum Techniques and Applications - Programme and Book of Abstracts (IEEE Cat. No.04TH8738)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISSSTA.2004.1371771","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Advanced CDMA transmission concepts for 3G and 4G mobile radio communications
CDMA techniques are widely used in 3G mobile radio systems, and this can be also expected for the fourth generation of mobile radio communications. CDMA offers the advantages of frequency diversity, interferer diversity and flexibility. Unfortunately, these advantages go along with the problem of signal separation typical of CDMA, which hampers spectral efficiency and capacity. In the paper some possibilities to mitigate this problem and to thus enhance CDMA performance are shown. These possibilities include CDMA signal separation based on the turbo principle, the application of multi-element antennas at the base stations in combination with nonlinear signal processing, and an alternative to conventional cellular structures exploiting the spatial separation of the mobile terminals.
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