摘要
调制方式自动识别的目的就是在尽可能少的先验知识前提下,判断出通信信号的调制方式,并估计出相应的调制参数。近年来,许多学术和军事研究机构都将兴趣集中在调制识别算法的研究和开发上。通过对Nandi A K和Azzouz E E所提出特征值的介绍、以及利用特征值对信号进行模拟信号调制方式识别的原理,提出了改进的特征值来取代传统特征值。仿真结果显示,改进的基于决策论的分类方法不但具有较高的识别率,而且相比改进前的分类器具有更快的识别速度。
The objective for automatic modulation classification is to recognize the modulation type and estimate the corresponding modulation parameters when the existing knowledge is relatively limited.In recent years,many academic and military institutions focus on the research and development of modulation recognition algorithms.Based on analysis of the eigenvalues proposed by A.K.Nandi and E.E.Azzouz,an improved eigenvalue is presented for substitution.Experiment results indicate thatthis new classifier based on policy-making theory is of high recognition rate and fairly high recognition speed.
出处
《通信技术》
2011年第3期7-8,共2页
Communications Technology
关键词
决策论
调制方式识别
特征值
认知无线电
policy-making theory
automatic modulation classification
eigenvalue
cognitive radio
