基于NI USRP的多模式自适应无线通信实验平台

NI USRP based experiment platform of multi-mode adaptive wireless communication

针对通信领域的教学和科研要求,利用美国国家仪器(NI)公司的通用软件无线电平台(USRP)和LabVIEW编程环境,设计多模式自适应软件无线电实验平台。在描述多模式自适应无线传输原理的基础上,给出了实验平台的实现框图,重点研究了数据包结构设计以及相应的调制识别方法,并给出了详细的实现过程、功能界面和测试结果。所设计的平台能够调整各项传输参数,操作简单,将抽象的数学理论和实际应用相结合,有助于高校学生通过动手实践提高对无线通信系统的认识。此外,还可以在平台的基础上展开无线通信的实践,提高创新意识。

For the demands of teaching and research in communication field,the experiment platform of multi-mode adaptive software radio is designed by using universal software radio platform（USRP）made in National Instruments（NI）and LabVIEW programming environment. Based on describing the principle of multi-mode adaptive wireless transmission,the implementation diagram of the experiment platform is given. The data packet structure design,and the corresponding recognition and modulation method are studied emphatically. The implementation procedure,function interface and test results are presented. The designed platform has easy operation,and can adjust each transmission parameter. Combining the abstract mathematical theories with practical applications can help students improve their understanding of wireless communication systems by means of handson practice,develop the practice of wireless communications on this platform,and improve their innovation consciousness.