摘要
FSK(Frequency-shift keying)是信息传输中常用的一种调制方式。采用以傅立叶变换为基础的经典频谱分析方法对FSK信号进行检测,由于FFT(Fast Fourier Transformation)的引入具有计算效率高的优点。但是当频率分辨率要求比较高采样数据长度不足的时候,其检测能力有限。文章提出了一种基于MUSIC(Multiple signal classification)算法进行短长度FSK数据检测的方法。仿真结果表明此设计方案可行,具有较高的实用性和可靠性。
FSK is a common modulation method for information transmission. FSK signal is detected by classical spectrum analysis via Fourier transform. This method has the advantage of high computational efficiency for FFT. When the required frequency resolution is high and the length of sample data is short, its detection capability is limited. In this paper, a short FSK signal detection method based on MUSIC algorithm is presented. The simulation results show that the method has good practicability and reliability.
作者
帅永旻
程斯
张勇
查巍巍
张江林
Shuai Yongmin;Cheng Si;Zhang Yong;Zha WeiWei;Zhang Jianglin(NO.722 Research Institute of China Shipbuilding Industry Corporation Wuhan,Hubei 430205,Chin)
出处
《电子技术（上海）》
2018年第7期67-68,63,共3页
Electronic Technology
