适用于低滚降系数成型脉冲的定时恢复方案

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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Bibliographic Details
Published in电子技术应用 Vol. 37; no. 8; pp. 117 - 119
Main Author 黄磊 许科 崔慧娟 唐昆
Format Journal Article
LanguageChinese
Published 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 2011
Subjects
NDA定时恢复
后滤波
绝对值非线性
预滤波
NDA定时恢复
预滤波
绝对值非线性
后滤波
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ISSN0258-7998
DOI10.3969/j.issn.0258-7998.2011.08.038

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Summary: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。
Bibliography:Huang Lei, Xu Ke, Cui Huijuan, Tang Kun （Tsinghua National Laboratory for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China）
NDA timing recovery; absolute value nonlinear; prefilter; postfilter
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.
11-2305/TN
ISSN:0258-7998
DOI:10.3969/j.issn.0258-7998.2011.08.038