| 利用内插/重采样器实现全数字码元同步 |
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| 引用本文： | 眭惠巧.利用内插/重采样器实现全数字码元同步[J].无线电工程,2008,38(3):21-24. |
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| 作者姓名： | 眭惠巧 |
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| 作者单位： | 中国电子科技集团公司第五十四研究所,河北,石家庄,050081 |
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| 摘 要： | 以采样定理和采样恢复为理论依据,分析了利用内插/重采样技术从基带采样信号中恢复数字信号最佳判决点的可行性。给出了采用该技术实现全数字码元同步的方法,并对其关键组成模块:内插/重采样器、码元误差检测、环路滤波器以及DDS等给出了详尽的设计说明和参数计算方法。该方案对软件和硬件实现有着普遍的适用性,其正确性和有效性经过了仿真验证。
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| 关 键 词： | 内插/重采样器 码元同步 采样定理 |
| 文章编号： | 1003-3106(2008)03-0021-04 |
| 修稿时间： | 2007年10月15 |
Realization of Full Digitized Symbol Timing by Using Interpolation and Resampler |
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| SUI Hui-qiao.Realization of Full Digitized Symbol Timing by Using Interpolation and Resampler[J].Radio Engineering of China,2008,38(3):21-24. |
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| Authors: | SUI Hui-qiao |
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| Abstract: | In this paper,we analyze the feasibility of recovering digital si gnal optimized decision point from baseband sample signals based on Nyquist samp le theorem and signal recovery,present the method of digitized symbol timing re covery using interpolation and resampler and describe in detail the design and p arameter calculation methods of its key composition modules such as interpolatio n and resampler,timing error detector,loop filter and DDS.The method is suita ble for software and hardware implementation,and its correctness and validity a re verified through simulation. |
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| Keywords: | interpolation and resampler symbol timing Nyquist sample theorem |
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