基于USRP的802.11a OFDM收发信机的设计与实现  

Design and Implementation of 802.11a OFDM Transceiver Based on USRP

作　　者：李昊洋 刘海涛 李冬霞 LI Haoyang;LIU Haitao;LI Dongxia(College of Electronic Information and Automation,Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]中国民航大学电子信息与自动化学院,天津300300

出　　处：《实验室研究与探索》2021年第5期134-138,169,共6页Research and Exploration In Laboratory

基　　金：天津市本科教学质量与教学改革研究计划项目(B201005907);天津市一流课程建设项目(10412004);中央高校基本科研业务费项目中国民航大学专项(3122019056)。

摘　　要：OFDM是一种多载波传输技术,被应用于无线局域网标准IEEE 802.11a的物理层。基于USRP和LabVIEW的软件无线电平台实现了802.11a OFDM系统原型。给出了802.11a OFDM系统的工作原理及实现方法,利用USRP和LabVIEW实现了OFDM收发信机的原型构建,在实验室无线信道环境下通过对文本的传输进行了测试验证。测试结果表明,系统原型工作稳定,该平台可以实现通信系统原型的快速开发及算法验证。该设计实例为USRP平台在通信学科的实验教学及科研工作的应用提供了很好的范例。OFDM is a multi-carrier transmission technology,and is applied to the physical layer of IEEE 802.11 a which is the standard of wireless local area network.A prototype of the 802.11 a OFDM system is implemented based on the software radio platform of USRP and LabVIEW.The working principle and implementation method of 802.11 a OFDM system are given firstly.Then the prototype of OFDM transceiver is constructed based on USRP and LabVIEW.Finally,the prototype is tested and verified through text transmission in the real wireless channel environment of the laboratory.The test results show that the designed system prototype operates stably and the platform can realize the rapid development of the system prototype and algorithm verification.The paper provides a good example for the further promotion of the USRP platform in the experimental teaching and scientific research of the communication subject.

关 键 词：正交频分复用 802.11A标准 通用软件无线电外设 

分 类 号：TN914[电子电信—通信与信息系统]