摘要
数字通信信号调制方式识别有重要的现实意义。针对各数字信号的特点,利用Haar小波函数归一化前后小波变换模值,实现对数字信号的类间识别;根据数字信号进制数,进行数字信号的类内识别,并通过软件仿真验证该方法的有效性。仿真结果表明,基于小波变换的调制方式识别方法可对数字信号进行有效的识别。
Modulation recognition of digital signals has much significance. According to characteristics of digital signals, modulation recognition between-classes is completed by the modulus, which is calculated by normalized and non-normalized amplitude through Haar wavelet transform. And modulation recognition within-classes is fulfilled by digital signals ary. And this method is validated through software simulating. Simulation results show that the recognition method based on wavelet transform can recognize digital signals correctly.
出处
《沈阳理工大学学报》
CAS
2015年第3期10-15,23,共7页
Journal of Shenyang Ligong University
关键词
数字信号
小波变换
调制方式识别
幅度归一化
digital signals
Wavelet Transform
modulation recognition
normalized ampli-tude
