基于GNU Radio的单边带解调方式的研究

摘要

通过GNU Radio软件平台和RTL⁃SDR硬件设备搭建软件无线电开发平台，对短波单边带解调算法进行仿真研究。介绍了GNU Radio平台及 RTL⁃SDR 的功能及结构，基于软件无线电的思想，利用其数字正交解调算法，在GRC平台上对短波频段单边带解调方法进行了仿真测试研究。测试结果表明了此解调算法的可行性，并且与模拟解调相比其实时性好，且平台搭建简单方便。%The software defined radio ( SDR ) platform is built based on GNU Radio software platform and RTL⁃SDR hardware equipment to perform simulation research on shortwave single sideband demodulation algorithm.This paper introduces the functions and structure of GNU Radio platform and RTL⁃SDR.Based on SDR idea,the digital orthogonal demodulation algorithm is used to perform simulation test research on shortwave single sideband demodulation method at GRC platform. The simulation test results show that this demodulation algorithm has feasibility,high real⁃time performance compared with analog demodulation and simple platform construction convenient for simulation test research.