基于OFDM原理的SDR干扰信号研究

Research into SDR Jamming Signal Based on OFDM Theory

应用正交频分复用调制(OFDM),基于GNU Radio软件无线电平台开发噪声干扰系统,根据目标信号的频谱特征,可采用OFDM对噪声干扰信号频谱进行灵活控制,产生具有多个不同带宽的干扰信号。同时,基于GNU Radio软件平台与通用软件无线电外设,开发信号处理模块及噪声干扰系统,实现传统硬件信号处理功能,从而使得信号产生更灵活高效,降低了系统对硬件的依赖性,有利于提高系统的适应性。

Orthogonal frequency division multiplexing(OFDM)modulation is applied to develop the noise jamming system based on the GNU Radio software radio platform.According to the spectral characteristics of target signals,OFDM modulation can be used to flexibly control the spectrum of noise jamming signals,jamming signals with multiple different bandwidths can be generated.At the same time,based on the GNU Radio software platform combined with general software radio peripherals,the signal processing modules and noise jamming system are developed to instead traditional hardware for signal processing functions,which is more flexible and efficient for signal generation,reduces the system dependence on the hardware and is helpful to improve the adaptability of the system.