摘要
提出了一种基于FIR陷波器的窄带抑制UWB脉冲设计方法。通过对各种窗函数的陷波性能比较分析,选出最佳的窗函数来设计FIR陷波器。以高斯脉冲导数为例,对所设计陷波器进行仿真验证,并就陷波前后的脉冲波形的通信性能进行了比较。仿真结果表明:陷波后脉冲具有良好的窄带干扰抑制能力,能够和其它通信系统更好地共存。另外,此方法不需要在整个频段内降低UWB脉冲功率,实现起来简单灵活,为提高UWB脉冲发射功率,增大UWB系统的通信距离,提供了一种可行的方案。
An ultra-wideband（UWB） pulse design approach for narrowband interference suppression based on FIR notch filter is presented.According to the comparison of the trap performance of different kinds of window functions,the best window function is chosen to design the FIR notch filter.The designed notch filter is confirmed by simulating with example of Gaussian pulse derivatives,and the communication performance of the pulse and the trapped pulse is compared.The simulation results show that the trapped pulse suppresses the narrowband interferences effectively and solves the coexistence problem between UWB system and other existing communication systems successfully.Further more,the power spectral density of UWB pulse does not need to be reduced over the whole frequency band,and the realization of this method is easy and flexible.Therefore,it is possible to expand the communication range of UWB systems by increasing the transmitted power of UWB pulse.
出处
《电子信息对抗技术》
2010年第6期76-80,共5页
Electronic Information Warfare Technology
