| 多通道干扰下的多径时延估计 |
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| 引用本文： | 刘颖,王树勋,梁应敞. 多通道干扰下的多径时延估计[J]. 电子学报, 2001, 29(6): 762-765 |
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| 作者姓名： | 刘颖 王树勋 梁应敞 |
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| 作者单位： | 1. 长春邮电学院通信工程系,吉林长春 130012;2. 吉林工业大学信息科学与工程学院,吉林长春 130025;3. Technology Division,Center for Wireless Communication,Singapore 117674 |
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| 摘 要： | 在考虑多通道非平稳信号干扰及背景噪声的情况下,本文提出的基于循环相关的参数型时间延时估计方法,可准确地进行多径传输情况下的时间延时估计,有效地抑制干扰和噪声的影响.在估计性能方面,该方法优于基于相关的方法.在运算量和适应性能方面,该方法优于基于高阶累积量的方法.文章最后采用计算机模拟验证了文中的结论.
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| 关 键 词： | 循环相关 自相关 定位 时间延时估计 |
| 文章编号： | 0372-2112 (2001) 06-0762-04 |
| 收稿时间： | 2000-03-03 |
Multipath Time Delay Estimation in Multi-Channel Disturbance Case |
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| LIU Ying ,WANG Shu xun ,LIANG Ying chang. Multipath Time Delay Estimation in Multi-Channel Disturbance Case[J]. Acta Electronica Sinica, 2001, 29(6): 762-765 |
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| Authors: | LIU Ying WANG Shu xun LIANG Ying chang |
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| Affiliation: | 1. Dept of Communication Engineering,ChangChun Post and Telecommunication Institute,Changchun,Jilin 130012,China;2. Institute of Information Science and Engineering,JiLin University of Technology,Changchun,Jilin 130025,China;3. Technology Division,Center for Wireless Communication,Singapore 117674 |
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| Abstract: | Taking into account the multi channels disturbance and noises with the non stationary characteristic,time delay estimation based on cyclic correlation parametric approach is proposed in this paper.Multi path time delays are estimated precisely with this method,and disturbances and noises can be refrained effectively.This method has better performance than the time delay estimation based on correlative and has less calculating amount and more wide applicability than the estimation based on the higher order cumulant approach.The relevant conclusions are got and verified by the simulation experiments. |
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| Keywords: | cyclic correlation auto correlation positioning time delay estimation |
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