| 一种改进小波阈值的电力线通信信号消噪方法 |
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| 引用本文： | 夏文文.一种改进小波阈值的电力线通信信号消噪方法[J].电力系统及其自动化学报,2011,23(1):64-68. |
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| 作者姓名： | 夏文文 |
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| 作者单位： | 湖南省电力公司娄底电业局,娄底,417000 |
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| 摘 要： | 电力线通信信号包含大量噪声干扰,这些噪声严重干扰电力线通信,为此,提出一种改进阈值法和平移不变小波相结合的消噪方法.该方法对含噪的电力线通信信号进行小波分解,对分解后不同尺度下的小波信号进行平移不变并同时按改进阈值法进行处理,最后重构信号.以实测信号为例,提取去噪前后信号波形和误码率2个特征量,与传统消噪方法相比较,结...
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| 关 键 词： | 电力线通信 小波 消噪 阈值 平移不变量 |
De-noise Method of Power Line Communication Signals Based on the Improved Wavelet Threshold Scheme |
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| XIA Wen-wen.De-noise Method of Power Line Communication Signals Based on the Improved Wavelet Threshold Scheme[J].Proceedings of the CSU-EPSA,2011,23(1):64-68. |
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| Authors: | XIA Wen-wen |
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| Affiliation: | XIA Wen-wen(Loudi Electric Power Bureau of Hunan Electric Power Company,Loudi 417000,China) |
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| Abstract: | As the useful signal for power line communication(PLC) is usually affected by the noise to some extent,a scheme of wavelet threshold de-noising method associated with translation invariant wavelet is proposed in this paper.Firstly,the power line signals with noises are wavelet decomposed.Then,the wavelet signals are treated by translation invariant wavelet and improved wavelet threshold de-noising method.Lastly,the PLC signals are reconstructed.Take on-site original signals for example,the waveforms and bit... |
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| Keywords: | power line communication wavelet de-noise threshold translation invariant |
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