摘要
通信信号调制识别技术在军事和民用领域都具有重要的应用前景 ,本文对现有的通信信号自动调制识别技术进行了介绍 ,并提出了一种新的PSK/QAM信号调制识别方法 ,该方法将重建的接收信号星座图的形状作为调制识别的特征 ,首先通过聚类方法重建接收信号的星座图 ,并利用定性定量转换模型———云模型对重建的星座图进行建模 ,最后利用基于云模型的不确定性推理得到接收信号的调制方式。实验证明该方法是可行的。
It is promising to apply the techniques for automatic modulation recognition of communication signals in both military and civilian domains.In this paper,several typical methods for automatic modulation recognition of communication signals are introduced, and a new method for automatic modulation recognition of PSK/QAM signals based on cloud model is suggested.This method makes use of the rebuilt constellation shape of received signal as classification characteristic.After the constellation shape of the received signal is rebuilt,the transform model between qualitative and quantitative expressions,cloud model,is used to build the uncertainty reasoning model of the constellation shape.At last,the modulation type of the received signal can be accessed by the built model.Experiments have shown that this method is feasible.
出处
《测控技术》
CSCD
2003年第3期15-19,共5页
Measurement & Control Technology
基金
国家自然科学基金资助项目 ( 69975 0 2 4)
973资助项目 (G19980 3 0 5 0 8-4 )
关键词
调制识别
聚类
云模型
不确定性推理
modulation recognition
clustering
cloud model
uncertainty reasoning
