{"title":"基于相关峰的OFDM采样频率盲同步方法","authors":"Zixin Ye, Xi Tian, Hao Xie, Keju Zhang","doi":"10.1145/3507971.3508012","DOIUrl":null,"url":null,"abstract":"This paper studies the synchronization of sampling frequency for OFDM systems. A method of blind synchronization of OFDM sampling frequency based on correlation peak is proposed. The interpolation algorithm is used to interpolate the sampled signals at different intervals. The peak position of the correlation curve between the interpolated signals and the cyclic prefix of the original signals is used for accurate estimation of effective symbol length, through which the accurate synchronization of sampling frequency offset is possible. The simulation results show that the method is independent of sampling frequency offset, carrier frequency offset and OFDM system baseband modulation method. With the method, a small number of OFDM symbols are needed for high-accuracy estimation of sampling frequency offset.","PeriodicalId":439757,"journal":{"name":"Proceedings of the 7th International Conference on Communication and Information Processing","volume":"59 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Blind Synchronization Method of OFDM Sampling Frequency Based on Correlation Peak\",\"authors\":\"Zixin Ye, Xi Tian, Hao Xie, Keju Zhang\",\"doi\":\"10.1145/3507971.3508012\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper studies the synchronization of sampling frequency for OFDM systems. A method of blind synchronization of OFDM sampling frequency based on correlation peak is proposed. The interpolation algorithm is used to interpolate the sampled signals at different intervals. The peak position of the correlation curve between the interpolated signals and the cyclic prefix of the original signals is used for accurate estimation of effective symbol length, through which the accurate synchronization of sampling frequency offset is possible. The simulation results show that the method is independent of sampling frequency offset, carrier frequency offset and OFDM system baseband modulation method. With the method, a small number of OFDM symbols are needed for high-accuracy estimation of sampling frequency offset.\",\"PeriodicalId\":439757,\"journal\":{\"name\":\"Proceedings of the 7th International Conference on Communication and Information Processing\",\"volume\":\"59 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-12-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the 7th International Conference on Communication and Information Processing\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1145/3507971.3508012\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 7th International Conference on Communication and Information Processing","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1145/3507971.3508012","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Blind Synchronization Method of OFDM Sampling Frequency Based on Correlation Peak
This paper studies the synchronization of sampling frequency for OFDM systems. A method of blind synchronization of OFDM sampling frequency based on correlation peak is proposed. The interpolation algorithm is used to interpolate the sampled signals at different intervals. The peak position of the correlation curve between the interpolated signals and the cyclic prefix of the original signals is used for accurate estimation of effective symbol length, through which the accurate synchronization of sampling frequency offset is possible. The simulation results show that the method is independent of sampling frequency offset, carrier frequency offset and OFDM system baseband modulation method. With the method, a small number of OFDM symbols are needed for high-accuracy estimation of sampling frequency offset.
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