无线电通信技术Issue(4)：64-67,4.DOI:10.3969/j.issn.1003-3114.2015.04.16
一种CP M信号与P SK类信号的调制识别算法
An Algorithm for Modulation Recognition of Continuous Phase Modulation Signals and PSK-type Signals
吕平 1高勇1
作者信息
- 1. 四川大学 电子信息学院，四川 成都610065
- 折叠
摘要
Abstract
A method based on fractal box dimension and square spectrum line features is proposed perform modulation recognition for the signal set consisting of continuous phase modulation (CPM) and PSK⁃type signals in this paper.Firstly the fractal box dimension feature of each signal to be recognized in the signal set is extracted to figure out the CPM and OQPSK signal.Then the discrete spectral lines feature of square spectrum of the remaining signals is extracted to recognize BPSK, UQPSK and QPSK in turn. Finally, the classifier is designed according to the principles of decision tree to realize the recognition for signals within the set. The simulation results show that the proposed algorithm can realize the correct recognition rate of the signals in the set of over 90% when the SNR ( signal to noise ratio) is above 3dB.关键词
连续相位调制/分形盒维数/决策理论/调制识别Key words
CPM/fractal box dimension/decision theory/modulation recognition分类
信息技术与安全科学引用本文复制引用
吕平,高勇..一种CP M信号与P SK类信号的调制识别算法[J].无线电通信技术,2015,(4):64-67,4.
