基于循环平稳的DSSS系统窄带干扰抑制技术

A Narrowband Interference Suppressing Technology Based on Cyclic Stationary

在对窄带干扰的频谱特性分析的基础上,采用一种新的利用信号循环平稳特性的方法进行干扰抑制。利用LCL-FRESH滤波器对信号进行更精确的估计,从而有效地抑制了窄带干扰。仿真结果表明,同传统时域预测滤波器相比,这种干扰抑制方法,能够更好地估计和消除窄带干扰,具有更加优越的干扰抑制性能。

On the basis of analysis on the spectrum characteristic of narrowband interference,a novel narrowband interference suppressing method is proposed which takes use of the cyclic stationary characteristic of signal. LCL-FRESH filter is utilized to achieve more accurate estimate of signal,so that narrowband interference is suppressed effectively. The simulation results manifest that this method could estimate and suppress narrowband interference more effectively compared to traditional methods.