数字中频接收机中高精度符号定时同步研究A HIGH PRECISE RESEARCH FOR SYMBOL TIMING SYNCHRONIZATION OF IF DIGITAL RECEIVER
乔亚琼;魏宗寿;张驰;
摘要(Abstract):
论文研究了数字中频接收机的符号定时同步.在推导高采样率定时恢复可以实现高精度符号同步的基础上,提出一种高精度数字中频符号定时恢复方法.此方法属于反馈内插恢复,可以结合数字下变频在FPGA或ASIC中实现,提高跟踪速度和精度.最后对QPSK信号进行了仿真,仿真结果表明了该方法的可行性和实用性。
关键词(KeyWords): 符号定时同步;数字中频;Gardner检测
基金项目(Foundation):
作者(Author): 乔亚琼;魏宗寿;张驰;
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DOI:
参考文献(References):
- [1]J.Riba,J.Sala.Conditional Maximum Likelihood Timing Recovery Estimators and Bounds IEEE Transactions on Signal Processing,2001,49(4):pp835-850.
- [2]A.D'Andrea,U.Mengali and R.Reggiannini.The modified Cramer-Rao bound and its application to synchronization problems.IEEE Trans.Commun.,1994,42(2):pp1391-1399.
- [3]U.Mengali,A.D'Andrea.Synchronization Techniques for Digital Receivers.1997New York,Plenum.
- [4]S.Srilcanteswara,J.H.Reed,P.Athanas and R.Boyle.A soft radio architecture for reconfigurable platforms.IEEE Commun.Mag.,2000,41(2):pp140-147.
- [5]Tzu-Chieh Kuo,Alan Kwentus,and Alan N.Wiilson Jr.A programmableinterpolation filter for digital communications applications.IEEE Transactions on Signal Processing,1998,37(2):pp97-100.