摘要
以决策论为基础提出了一种改进的数字调制信号识别方法,该方法仅需4个相对简单的特征参数,就能识别2ASK、4ASK、2FSK、4FSK、2PSK、4PSK和16QAM这7种数字调制信号。仿真结果表明,该方法复杂度较低,识别正确率有较大提高,尤其对于2ASK、4ASK、MPSK/MFSK及16QAM的识别,在信噪比较低的情况下,具有较好的识别效果。
An improved method is proposed to identify the types of the digital modulation signals based on the decision theory. By this method, only 4 relatively simple characteristic parameters are needed to identify the seven digital modulation signals, 2ASK, 4ASK, 2FSK, 4FSK, 2PSK, 4PSK and 16QAM. Computer simulations show that the complexity of the improved method is reduced greatly, and the correct recognition rate is increased significantly. It performs specially well in identifying the four digital modulation signals, 2ASK, 4ASK, MFSK/MPSK and 16QAM, in the case of low signal to noise rate.
出处
《电子科技》
2015年第4期124-127,共4页
Electronic Science and Technology
关键词
调制识别
决策论
特征参数
信噪比
modulation recognition
decision theory
feature parameters
signal to noise rate
