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一种基于删余改进的码相差前馈估计方法

An Improved Feedforward Chip Synchronization Algorithm Based on Puncturing
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摘要 针对低载噪比下突发直扩信号扩频码相位估计问题,通过分析扩频码自相关函数Hilbert变换后特性,基于现有前馈估计方法,采用删余的思想改进得出了一种性能更优的前馈估计算法。仿真表明,与现有的几种前馈估计方法相比,本文算法码相差估计误差低于现有几种算法,可以有效提高低载噪比下码相差估计性能。 Considering the chip synchronization of impulse direct spread spectrum signal（IDSSS） under low C/N0 circumstances,by analyzing the character of chip auto-correlated function,an improved algorithm based on the former feedforward chip synchronization algorithms is proposed that adopting the idea of puncturing.Comparing with the several existing feedforward chip synchronization algorithms,simulation results show the outstanding feature of this improved algorithm.The improvement can upgrade the chip synchronization performance effectively under low C/N0 circumstances.
作者 张旺 肖勇
机构地区 北京环球信息应用开发中心 解放军理工大学通信工程学院
出处 《山西电子技术》 2012年第3期48-49,87,共3页 Shanxi Electronic Technology
关键词 扩频码同步 前馈估计 HILBERT变换 多项式拟合 删余 chip synchronization feedforward estimation Hilbert transformation polynomial fitting puncturing
分类号 TN911 [电子电信—通信与信息系统]
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参考文献9

  • 1谭述森.卫星导航定位工程[M].北京:国防工业出版社,2006.
  • 2U. Mengali, A. N. D ' Andrea. Synchronization Techniques for Digital Receivers [ M ]. New York: Plenum, 1997.
  • 3Wang Xinehun, Wang Feixue. A Simple and Efficient De- lay Esfiamtor for Short Burst DS-SS Signal [ C ]. ISSSTA 2004, Sydney, Austmlia, Sep ,2004.
  • 4Luo Wu,Lu Luxi. A Simple and Efficient Timing Estima- tion Algorithm for Ds-cdma Systems [ C ]. ICCT 2006, Guilin, Nov. 2006.
  • 5NGUYEN DOAN VO, THO LE-NGOC. Maximum Likeli- hood (ML) Symbol Timing Recovery (STR) Techniques for Reconflgurable PAM and QAM Modems [ J ]. Wireless Personal Communications,2007,41:379 - 391.
  • 6Kevln J. Quirk, Meem Srinivasan. PN Code Tracking U- sing Noncommensurate Sampling [ J ]. IEEE Trans. Com- mun,2006,54:1845 - 1856.
  • 7G. Giunta. Digital algorithm for Maximization of Symmetric Ambiguity Functions and Application to Signal Time - de- lay Estimation[ J ]. IEEE Proc. Image and Signal Process- ing,2(X)2,146:313 -316.
  • 8Zahir M. Hussaln. Hilbert Transformer and Time Delay: Statistical Comparision in the presence of Gaussian Noise [J]. IEEE Trans. Signal Processing, 2002,50:501 - 508.
  • 9Francesco Benedetto, Gaetano Giunta, Simone Bucci. A Unified Approach for Time-Delay Estimators in Spread Spectrum Communications [ J ]. IEEE Trans. Commun, 2011,59:3421 - 3429.
山西电子技术
2012年 第3期

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