{"title":"Gradient-based search technique using for M-QAM signals' DC-offset estimation and compensation","authors":"A. Pestryakov, E. Khasianova","doi":"10.1109/CRMICO.2014.6959371","DOIUrl":null,"url":null,"abstract":"The possibility of using a gradient search technique to compensate the DC offset at the output of the quadrature converter is investigated in this research. The preliminary compensation of I/Q imbalance is assumed. The results of the work are a simulation model of a demodulator created in MATLAB SIMULINK in order to analyze the use of this method when receiving signals with M-QAM modulation, and frequency spectrum before and after calibration for QAM-4, -16, -32.","PeriodicalId":6662,"journal":{"name":"2014 24th International Crimean Conference Microwave & Telecommunication Technology","volume":"45 4","pages":"234-235"},"PeriodicalIF":0.0000,"publicationDate":"2014-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2014 24th International Crimean Conference Microwave & Telecommunication Technology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CRMICO.2014.6959371","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
The possibility of using a gradient search technique to compensate the DC offset at the output of the quadrature converter is investigated in this research. The preliminary compensation of I/Q imbalance is assumed. The results of the work are a simulation model of a demodulator created in MATLAB SIMULINK in order to analyze the use of this method when receiving signals with M-QAM modulation, and frequency spectrum before and after calibration for QAM-4, -16, -32.
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