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软件无线电的基本思想是构造一个具有开放性、标准化、模块化的通用硬件平台,通过软件编程来实现无线电台的各种功能。调制方式的多样化必然导致无线电台的多模式化。调制方式多样化的存在,就必须要具备自动识别各种调制方式的方法,所以,信号调制方式的自动识别是软件无线电中必须具备的功能之一。决策理论具有结构简单,识别种类多的优点,这也是本文采用决策理论的主要原因。最后仿真验证了决策理论是非常有效的。
The basic idea of software radio is to construct an open, standardized and modular universal hardware platform to realize various functions of radio stations through software programming. Diversification of modulation methods inevitably leads to multi-mode radio stations. Therefore, the automatic recognition of signal modulation mode is one of the functions that must be possessed by software radio. Decision theory has the advantages of simple structure and many kinds of recognition. This is also the main reason why decision theory is adopted in this paper. The final simulation validates the decision theory is very effective.