{"title":"一种新的CMMB系统时频同步估计器","authors":"Ruimin Wang, Hui Li","doi":"10.1109/CMC.2010.223","DOIUrl":null,"url":null,"abstract":"The time-frequency synchronization algorithm is a critical part for the OFDM (Orthogonal Frequency Division Multiplexing) technology used in the CMMB (China Mobile Multimedia Broadcasting) systems. Several time-frequency synchronization methods have been proposed for CMMB systems, however, the amount of calculating the time-frequency offset is huge. This paper proposes a new algorithm for time-frequency synchronization, the FFT points of this algorithm is only 50% of the traditional algorithm, and the process of extracting pilot is saved. Theoretical analysis and simulations show that this algorithm can work well under low SNR(-2db) channel, and reduces the complexity of hardware and computation by 50%.","PeriodicalId":296445,"journal":{"name":"2010 International Conference on Communications and Mobile Computing","volume":"118 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2010-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"A Novel Time and Frequency Synchronization Estimator for CMMB Systems\",\"authors\":\"Ruimin Wang, Hui Li\",\"doi\":\"10.1109/CMC.2010.223\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The time-frequency synchronization algorithm is a critical part for the OFDM (Orthogonal Frequency Division Multiplexing) technology used in the CMMB (China Mobile Multimedia Broadcasting) systems. Several time-frequency synchronization methods have been proposed for CMMB systems, however, the amount of calculating the time-frequency offset is huge. This paper proposes a new algorithm for time-frequency synchronization, the FFT points of this algorithm is only 50% of the traditional algorithm, and the process of extracting pilot is saved. Theoretical analysis and simulations show that this algorithm can work well under low SNR(-2db) channel, and reduces the complexity of hardware and computation by 50%.\",\"PeriodicalId\":296445,\"journal\":{\"name\":\"2010 International Conference on Communications and Mobile Computing\",\"volume\":\"118 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2010-04-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2010 International Conference on Communications and Mobile Computing\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/CMC.2010.223\",\"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 International Conference on Communications and Mobile Computing","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CMC.2010.223","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A Novel Time and Frequency Synchronization Estimator for CMMB Systems
The time-frequency synchronization algorithm is a critical part for the OFDM (Orthogonal Frequency Division Multiplexing) technology used in the CMMB (China Mobile Multimedia Broadcasting) systems. Several time-frequency synchronization methods have been proposed for CMMB systems, however, the amount of calculating the time-frequency offset is huge. This paper proposes a new algorithm for time-frequency synchronization, the FFT points of this algorithm is only 50% of the traditional algorithm, and the process of extracting pilot is saved. Theoretical analysis and simulations show that this algorithm can work well under low SNR(-2db) channel, and reduces the complexity of hardware and computation by 50%.
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