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随着信息技术的高速发展,通信成为人们生活中不可或缺的一部分,通信的目的,是为了安全快速的传递信息。信息的传递是通过信道进行的,现在有有线和无线两种通信系统,但无论是哪种通信系统,因信道的限制,信号都必须调制到一定波段才能进行传输。近年来,信号环境更加密集和复杂,是信号的调制识别日益困难,本文主要讲述数字通信信号的自动调制识别的方式,以及其发展方向。
With the rapid development of information technology, communication has become an indispensable part of people’s life. The purpose of communication is to transmit information safely and quickly. The transmission of information is through the channel. There are now two wired and wireless communication systems, but no matter what kind of communication system, the signal must be modulated to a certain band for transmission due to the limitation of the channel. In recent years, the signal environment is more intensive and complex, and it is increasingly difficult to recognize modulated signals. This paper mainly discusses the automatic modulation identification methods of digital communication signals and their development directions.