| 基于MPSK信号频偏估计的非线性滤波算法 |
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| 引用本文： | 李晶,朱江,张尔扬,沈荣骏.基于MPSK信号频偏估计的非线性滤波算法[J].西安电子科技大学学报,2004,31(3):473-475. |
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| 作者姓名： | 李晶 朱江 张尔扬 沈荣骏 |
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| 作者单位： | [1]国防科技大学电子科学与工程学院，湖南长沙410073 [2]中国人民解放军总装备部科技委，北京100080 |
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| 基金项目： | 国家部委预研基金资助项目(113030401) |
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| 摘 要： | 基于MPSK信号的非线性频偏估计算法，通过对叠加了高斯分布白噪声接收信号的非线性交换分析，将非线性滤波(中值滤波)算法应用于载波频率估计之中．运用Monte Carlo仿真手段对其进行了验证，结果表明，在非线性频率估计中运用中值滤波算法后，其估计的均方误差较之运用均值滤波算法有很大的改善．
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| 关 键 词： | 非线性滤波算法 载波估计 MPSK调制信号 |
| 文章编号： | 1001-2400(2004)03-0473-03 |
A nonlinear filtering algorithm and achievement based on frequency estimation of MPSK modulated signals |
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| LI Jing.A nonlinear filtering algorithm and achievement based on frequency estimation of MPSK modulated signals[J].Journal of Xidian University,2004,31(3):473-475. |
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| Authors: | LI Jing |
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| Affiliation: | (1. School of Electronic Science and Eng., N.U.D.T., Changsha 410073, China;2. Xi'an Satellite Control Centre, Xi'an 710043, China;3. General Equipment Dept. of PLA, Beijing 100080, China) |
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| Abstract: | Based on the nonlinear frequency algorithm, the nonlinear transform of white Gaussian noise, which is added to the received signals are analyzed. And the idea of applying nonlinear filtering (the median filtering) algorithm to nonlinear frequency estimation is proposed. At the same time, Monte Carlo simulation is used to validate the idea. The results show that the Mean Square Error(MES) of frequency estimation using a median filter is better than that by using a mean value filter. |
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| Keywords: | nonlinear filtering algorithm carrier estimation MPSK modulated signal |
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