| 脉冲噪声环境下改进的顽健循环时延估计算法 |
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| 引用本文： | 刘洋,邱天爽,李景春.脉冲噪声环境下改进的顽健循环时延估计算法[J].通信学报,2013,34(6):22-190. |
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| 作者姓名： | 刘洋 邱天爽 李景春 |
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| 作者单位： | 1. 内蒙古大学 电子信息工程学院，内蒙古 呼和浩特 010021；
2. 大连理工大学 电子信息与电气工程学部，辽宁 大连116024；3. 国家无线电监测中心，北京 100037 |
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| 基金项目： | 国家自然科学基金资助项目（61172108, 61139001）；内蒙古大学高层次人才基金资助项目（135110） |
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| 摘 要： | 研究了脉冲噪声环境下循环平稳信号的时延估计问题，针对脉冲噪声环境中基于传统二阶谱相关函数的时延估计方法性能退化问题，提出了基于分数低阶循环谱的改进顽健算法。相对于传统算法，新算法对脉冲噪声、高斯噪声、干扰信号都具有较好的抑制作用。仿真结果证明了算法的有效性和顽健性。
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| 关 键 词： | 循环平稳 时延估计 ?稳定分布 分数低阶循环谱 |
Modified robust time delay estimation algorithm
based on cyclostationarity in impulsive noise |
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| Yang LIU,Tian-shuang QIU,Jing-chun LI.Modified robust time delay estimation algorithm
based on cyclostationarity in impulsive noise[J].Journal on Communications,2013,34(6):22-190. |
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| Authors: | Yang LIU Tian-shuang QIU Jing-chun LI |
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| Affiliation: | 1. College of Electronic Information Engineering,Inner Mongolia University,Huhhot 010021,China;2. Faculty of Electronic Information and Electrical Engineering,Dalian University of Technology,Dalian 116024,China;3. The State Radio Monitoring Center,Beijing 100037,China |
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| Abstract: | The problem of time delay estimation (TDE) for cyclostationary signals in the presence of α-stable distribution impulsive noise and interfering signals was addressed.Since the conventional algorithms based on the second-order cy-clic spectral correlation function degenerated severely in impulsive noise environment,a novel robust algorithm based on the fractional lower-order spectrum was proposed.Compared with conventional spectra analysis methods,this novel method could suppress Gaussian noise,non-Gaussian impulsive noise and interfering signals more effectively.Simulation results demonstrate the effectiveness and robustness of the novel algorithm. |
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| Keywords: | cyclostationarity time delay estimation α-stable distribution fractional lower-order cyclic spectrum |
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