摘要
数字信号调制方式识别技术是盲信号处理的关键技术之一,在研究基于减法聚类的MQAM信号的类内识别方法的基础上,针对该类识别算法需要的统计数据量较大不适用于短突发信号的缺点,研究了一种改进算法并对其识别性能进行了实验仿真。仿真结果分析可知,改进算法在处理短突发信号能够取得较高的正确识别率,具有一定的实用价值。
The modulation classification technique of digital signal is one of the key technologies in the area of blind signal processing. In this paper the inter - class modulation classification method of MQAM based on subeluster is researched, based on that an improved method is proposed in order to overcome the disadvantage that the common method need a great deal of datum and don＇ t suitable for short burst signal. In this paper the performance of the improved method is simulated. The result of simulation shows that the improved method can gain the high accurate discrimination rate and possess a certain practical value.
出处
《电声技术》
2013年第8期77-79,共3页
Audio Engineering
关键词
调制方式
类内识别
信噪比
识别率
modulation mode
inter - class classification
Signal - Noise Ratio
discrimination rate
