虚拟无线电是一种真正意义上的软件无线电。它采用高性能的模数和数模转换器 (A/ D/ A) ,对宽带射频信号直接进行变换 ,所有无线电功能用运行于工作站或个人计算机上的应用程序来实现。文中介绍虚拟无线电的结构和实现虚拟无线电的若干关键技术 Virtual radio is a true software radio. It uses high-performance analog-to-digital and digital-to-analog converters (A / D / A) to directly convert broadband RF signals. All radio functions are implemented using applications running on workstations or personal computers. This article describes the structure of virtual radios and several key technologies for implementing virtual radios