摘要
针对频率调制信号的识别 ,提出采用恒参滤波方法 ,将信号频率调制信息转换为信号包络的变化 ,再通过提取信号包络的直方图特征来识别信号调制方式 .与传统方法相比 ,该方法特征提取简单 ,计算量小 ,识别速度快 ,在较低信噪比条件下 ,可以有效识别FM ,BFSK ,QFSK ,MFSK等信号 .
To classify the frequency modulated signals, a parameter invariant filter was proposed. It can transfer the signal frequency modulated information to the variety of envelope and extract the histogram feature to classify the modulation types. Compared with the conventional methods, it is characterized by easily extracting, simply computing and rapidly achieving and it can classify the type of signal such as FM, BFSK, QFSK and MFSK in low SNR. It is good for the field of software radio which needs real time accomplishment.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2004年第7期48-50,共3页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家高技术研究发展计划资助项目 (2 0 0 2AA1 1 90 1 0 )
关键词
调制识别
频率调制
恒参滤波
直方图
modulation recognition
frequency modulation
parameter invariant filter
histogram
