基于USRP的软件无线电算法验证平台的设计  

Design of software defined radio arithmetic evaluation platform based on USRP

作　　者：唐俏笑 赵利[1] 蔡成林[1] 黄星 TANG Qiaoxiao;ZHAO Li;CAI Chenglin;HUANG Xing(School of Information and Communication, Guilin University of Electronic Technology, Guilin 541004, China)

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《桂林电子科技大学学报》2018年第2期97-101,共5页Journal of Guilin University of Electronic Technology

基　　金：国家自然科学基金(61771150)

摘　　要：针对软件无线电算法算法验证平台中存在的模式单一、实时性差等问题,提出一种基于USRP-2920的软件无线电算法验证平台的系统结构和构建方法,使得验证模式从单一软件验证变成更贴近实际环境的"硬件+软件"验证模式。以USRP-2920和Windows-PC为软件无线电基本平台,采用LabVIEW和Matlab软件搭建算法验证平台,实时对伪卫星信号进行中频信号采样及模数转换,通过高速数据接口,在Windows-PC上实现无线信号的实时采集。采用Matlab软件进行信号的捕获、跟踪,并解算出导航电文。以室内伪卫星信号捕获和跟踪算法为验证案例,实验结果表明,验证算法平台技术可行,实施方便,解决了真实环境下算法验证的问题。According to the existing problems of monotonous and lack of real-time in software defined radio arithmetic evaluation platform at present,the system architecture and construction method of the software defined radio arithmetic evaluation platform based on USRP-2920 are described,The evaluation mode is transformed from a single software verification into a ＂ hardware＋ software＂ verification which is closer to the actual working environment.USRP-2920 and Windows-PC as a software defined radio basic platform is used.The pseudolite signal is sampled at an intermediate frequency and converted to a digital signal by arithmetic evaluation Platform of LabVIEW and Matlab software.Then,through the high-speed data interface,The wireless signal is real-time collected in Windows-PC and the algorithms of signal acquisition,tracking and demodulating the navigation message are implemented by MATLAB.An example of the implementation of indoor pseudolite signal acquisition and tracking algorithm is given,The results indicate that the arithmetic evaluation platform technology is feasible and easy to implement.The technology can effectively resolve problems of arithmetic evaluation in real environment.

关 键 词：USRP-2920 LABVIEW 室内定位 捕获 跟踪 

分 类 号：TN859[电子电信—信息与通信工程]