基于分布直方图的MFSK调制识别技术  

MFSK Modulation Recognition Technology based on Distribution Histogram

作　　者：林秋海 龙华[1] LIN Qiuhai;LONG Hua(Kunming University of Science and Technology,Kunming Yunnan 650100,China)

机构地区：[1]昆明理工大学,云南昆明650100

出　　处：《通信技术》2021年第11期2471-2475,共5页Communications Technology

基　　金：国家自然科学基金(No.61761025)。

摘　　要：当前,基于统计量分析识别多进制频移键控(M-ary Frequency Shift Keying,MFSK)调制模式的研究比较少,且识别的准确率也不高。通过基于分布直方图的识别技术,并利用MFSK中各类调制信号瞬时频率统计量的差异,实现了对二进制数字频率调制(Binary Frequency Shift Keying,2FSK)、4进制数字频率调制(4-ary Frequency Shift Keying,4FSK)和8进制数字频率调制(8-ary Frequency Shift Keying,8FSK)三者的区分。经仿真测试验证,在加性高斯白噪声信道中设信噪比为1~20 dB的情况下,3类信号平均识别率能达到98.53%。At present,there are few studies on the recognition of M-ary frequency shift keying(MFSK)modulation mode based on statistical analysis,and the recognition accuracy is not high.Through the recognition technology based on distribution histogram and using the difference of instantaneous frequency statistics of various modulation signals in MFSK,binary frequency shift keying(2FSK),4-ary frequency shift keying(4FSK)and 8-ary frequency shift keying(8FSK)are realized.The simulation test indicates that the average recognition rate of three types of signals can reach 98.53%when the SNR is 1~20 dB in the additive white Gaussian noise channel.

关 键 词：调制方式 分布直方图 多进制频移键控 模式识别 

分 类 号：TN93[电子电信—信号与信息处理]