| 一种基于二进小波变换的抗时变干扰算法 |
| |
| 引用本文： | 李宁,蒋建中,张东方,郭士旭.一种基于二进小波变换的抗时变干扰算法[J].信息工程大学学报,2011,12(1):88-91,102. |
| |
| 作者姓名： | 李宁 蒋建中 张东方 郭士旭 |
| |
| 作者单位： | 信息工程大学,信息工程学院,河南,郑州,450002 |
| |
| 摘 要： | 针对短波语音中存在的时变干扰难以跟踪,更难以滤除的问题,提出了一种基于二进小波变换的抗时变干扰算法,利用小波变换的时频域上的高分辨率将信号分解成小波各层细节信号,并通过调整各小波细节信号的加权因子,实现了较好滤除时变干扰的效果。仿真表明此算法不但提高语音信号信噪比,而且使语音失真较小,要明显优于传统的陷波算法。
|
| 关 键 词： | 时变干扰 二进小波变换 干扰估计 干扰滤除 |
Research on Anti Time Varying Interference Based on Wavelet Transform |
| |
| LI Ning,JIANG Jian-zhong,ZHANG Dong-fang,GUO Shi-xu.Research on Anti Time Varying Interference Based on Wavelet Transform[J].Journal of Information Engineering University,2011,12(1):88-91,102. |
| |
| Authors: | LI Ning JIANG Jian-zhong ZHANG Dong-fang GUO Shi-xu |
| |
| Affiliation: | LI Ning,JIANG Jian-zhong,ZHANG Dong-fang,GUO Shi-xu(Institute of Information Engineering,Information Engineering University,Zhengzhou 450002,China) |
| |
| Abstract: | The narrow-band interference in short-wave communication is time-varying and difficult to be tracked,even harder to be filtered.Considering high resolution of wavelet transform,the article introduces a kind of resistant algorithm that decomposes the voice signal into detail signals,and filters the interference satisfactorily by adjusting weighted coefficients of the signal and the interference separately.Simulation results show that the algorithm is able to improve the Signal-to-Noise Ratio and improve the ... |
| |
| Keywords: | time-varying interference dyadic wavelet transform interference estimation interference rejection |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《信息工程大学学报》浏览原始摘要信息 |
|
点击此处可从《信息工程大学学报》下载全文 |
|
