摘要
小波变换对信号的跳变点和奇异点有很好的检测能力,其应用相当广泛。数字信号在码元边界上由于幅度、频率或相位的变化而产生变化,利用小波变换的模极大值方法可以对数字通信信号的码元跳变点进行检测。计算机仿真结果表明,该方法对码元的跳变点检测具有很高的精确性。
Wavelet transform is widely used for the detection of signal changing and singularity. The coding of digital communication signal changes in different coding because of the magnitude, frequency or phase. The paper presents wavelet transform modulus maximum to detect the coding changing. The simulation validates this method is accurate.
出处
《信息技术》
2008年第9期39-43,共5页
Information Technology
关键词
小波变换
数字通信信号
码元跳变点
模极大值
wavelet transform
digital communication signal
coding changing
module maximum
