{"title":"基于数字波束形成的MLT扩频系统的干扰抑制","authors":"Xiaotao Feng, Yong Shang","doi":"10.1109/ISISE.2010.116","DOIUrl":null,"url":null,"abstract":"In this paper, we improve the traditional expanded time and frequency OFDM (ETF-OFDM) system by using Inverse Modulated Lapped Transform (IMLT) / Modulated Lapped Transform (MLT) instead of Inverse Discrete Fourier Transform (IDFT) / Discrete Fourier Transform (DFT) in the OFDM modulation / demodulation part, respectively. For further interference suppression, we adopt the digital beam forming scheme at the transmitter to null-steering the jammings. Simulation results show that the proposed system has better anti-jamming performance than the conventional DFT-based system.","PeriodicalId":206833,"journal":{"name":"2010 Third International Symposium on Information Science and Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2010-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Interference Suppression in a MLT Based Spread Spectrum System with Digital Beamforming\",\"authors\":\"Xiaotao Feng, Yong Shang\",\"doi\":\"10.1109/ISISE.2010.116\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this paper, we improve the traditional expanded time and frequency OFDM (ETF-OFDM) system by using Inverse Modulated Lapped Transform (IMLT) / Modulated Lapped Transform (MLT) instead of Inverse Discrete Fourier Transform (IDFT) / Discrete Fourier Transform (DFT) in the OFDM modulation / demodulation part, respectively. For further interference suppression, we adopt the digital beam forming scheme at the transmitter to null-steering the jammings. Simulation results show that the proposed system has better anti-jamming performance than the conventional DFT-based system.\",\"PeriodicalId\":206833,\"journal\":{\"name\":\"2010 Third International Symposium on Information Science and Engineering\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2010-12-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2010 Third International Symposium on Information Science and Engineering\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ISISE.2010.116\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2010 Third International Symposium on Information Science and Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISISE.2010.116","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Interference Suppression in a MLT Based Spread Spectrum System with Digital Beamforming
In this paper, we improve the traditional expanded time and frequency OFDM (ETF-OFDM) system by using Inverse Modulated Lapped Transform (IMLT) / Modulated Lapped Transform (MLT) instead of Inverse Discrete Fourier Transform (IDFT) / Discrete Fourier Transform (DFT) in the OFDM modulation / demodulation part, respectively. For further interference suppression, we adopt the digital beam forming scheme at the transmitter to null-steering the jammings. Simulation results show that the proposed system has better anti-jamming performance than the conventional DFT-based system.
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