摘要
对扩频通信中的频域抗干扰滤波器进行算法的研究和仿真。频域中的滤波算法主要有TZ(Threshold Ze-roize),TC(Threshold Clipping),CMF(Condition Median Filter)等。在对已有算法仿真研究的基础上,将分段N sigma算法改进为连续的自适应门限选择算法,使得其抗干扰性能获得了一定程度的改善。以对信干比的改善性能为主要参数,对归零和钳位算法的抗干扰性能进行比较和仿真。仿真结果表明,频域误码性能有了较大改善。
The interference suppression filter in frequency domain is simulated and discussed in this paper. The filtering algorithms in the frequency domain includes TZ （Threshold Zeroize）, TC （Threshold Clipping）, CMF （Condition Median Filter） and so on. We compare and discuss the performance of these algorithms according to the SNR improvement,and make some alteration on some algorithms in the simulation process and make it has better performance in interference suppression and get more improvement on SNR. The simulation results show the interference suppression filter in frequency domain get more improvement on SNR.
出处
《现代电子技术》
2006年第24期125-128,共4页
Modern Electronics Technique
关键词
扩频通信
频域
仿真
抗干扰
spread spectrum
frequency domain
simulation
interference suppression
