| 适用于低滚降系数成型脉冲的定时恢复方案 |
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| 引用本文： | 黄磊,许科,崔慧娟,唐昆. 适用于低滚降系数成型脉冲的定时恢复方案[J]. 电子技术应用, 2011, 37(8): 117-119 |
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| 作者姓名： | 黄磊 许科 崔慧娟 唐昆 |
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| 作者单位： | 清华大学电子工程系清华信息科学与技术国家实验室,北京,100084 |
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| 摘 要： | 针对低滚降系数成型脉冲条件下平方定时恢复算法性能下降的问题,提出了基于绝对值非线性定时估计器的定时恢复方案,并指出绝对值非线性是一类基于高阶统计量定时恢复算法的特例,仿真指出当滚降系数在0.1～0.4之间时,绝对值非线性有显著的性能增益.并设计了相应的预滤波和后滤波结构,给出了仿真性能.
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| 关 键 词： | NDA定时恢复 绝对值非线性 预滤波 后滤波 |
Symbol timing recovery scheme for low roll-off factor shaping pulse |
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| Huang Lei,Xu Ke,Cui Huijuan,Tang Kun. Symbol timing recovery scheme for low roll-off factor shaping pulse[J]. Application of Electronic Technique, 2011, 37(8): 117-119 |
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| Authors: | Huang Lei Xu Ke Cui Huijuan Tang Kun |
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| Abstract: | When the roll-off factor of shaping pulse is low,an improved timing recovery scheme is proposed.The proposed scheme is based on absolute nonlinear,prefilter and postfilter.Simulation and theoretical analysis show that it has a significant performance gain over traditional square timing recovery scheme when roll-off factor is between 0.1 and 0.4. |
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| Keywords: | NDA timing recovery absolute value nonlinear prefilter postfilter |
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