用软件无线电技术实现的调制解调灵活性好，可以通过空中下载实现不同的调制方式，从而适应不同的通信体制。
It is flexible for the modulation and demodulation by software, and it may realize different modulation mode through the airborne downloading, therefore it suits the different communication systems.
首先介绍了用软件无线电实现的移动终端的重配置结构，接着重点分析了其中的重配置管理结构，最后给出了重配置的实现流程。
The recon-figuration architecture is introduced first, then the paper analyzes in detail the reconfiguration management architecture. Finally the process of reconfiguration is introduced.
本文研究表明在卫星定位导航系统中使用中频数字化的软件无线电结构是可行的，同时大大简化了用硬件对接收的卫星信号进行处理时电路的复杂性。
The study of this paper indicate that the application of digital IF Software Radio framework is practicable in the receiver of the Satellite Positioning and Navigation system.
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