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窄带干扰条件下,自适应滤波器产生非维纳效应。在分析非维纳效应产生机理的基础上,详细仿真研究了强单音干扰条件下,自适应均衡器的收敛和跟踪性能。通过研究得出了一些新的结论:多径和干扰的功率严重影响自适应均衡器的收敛速度,而干扰的频率对收敛速度几乎没有影响;固定的强单音干扰对自适应滤波器的信道跟踪性能影响较小;慢变的强单音干扰对跟踪性能影响较小,快变的单音干扰将对跟踪性能造成严重影响。
Under the condition of narrowband interference, the adaptive filter produces non-Wiener effect. On the basis of analyzing the mechanism of non-Wiener effect, the convergence and tracking performance of the adaptive equalizer under strong monophonic interference conditions are simulated in detail. Some new conclusions are obtained through research: the power of multipath and interference seriously affects the convergence rate of adaptive equalizer, and the frequency of interference has almost no effect on the convergence rate; the fixed strong monophonic interference affects the channel of adaptive filter The tracking performance is less affected; the slowly changing strong monophonic interference has less effect on the tracking performance, and the fast changing monophonic interference will have a serious impact on the tracking performance.