预滤波器 meaning in English
ante-filter
Examples
- It is impotent to design the prefilter which maintain the orthogonality and approximation order of central filter bank
在预滤波器的设计中，能够保持中心滤波器组的正交性和逼近阶是非常重要的。 - Design of prefilter of multiwavelets was discussed . for the prefilter designed by xia with interpolating property of ghm multiwavelet , a modified interpolating prefilter was presented
针对于xia等基于ghm多小波的插值特性而设计的预滤波器，我们给出了一个改进的插值预滤波器。 - These results prove that the design method has great affection to reduced timing jitter . at the same time , simulate the convergence characteristic of timing recovery loop which is added prefilter when the input qam
同时还仿真了加预滤波器后定时恢复环路在有载波误差、交叉串扰情况下的收敛情况，证明了所设计定时恢复环路是正确的。 - The orthogonal quasi - interpolation filter preserving approximation order designed by hardin and roach maintain the orthogonality and approximation order of central filter bank and give a proper direction in the design of prefilter
Hardin和roach设计的具有逼近阶的正交拟插值预滤波器保持了中心滤波器组的正交性和逼近阶，为预滤波器的设计指出了一条正确的方向。 - Because the qam signal which is small roll - up factor has big timing - error jitter in steady state that result in big timing jitter , an expression of impulse response for digital prefilter is deduced and a kind of sub - optimum design method for digital prefilter is proposed in this paper
针对匹配滤波器滚降因子较小的qam信号的稳态定时误差信号抖动较大，而造成较大定时抖动的情况。推导了一种用于减少定时抖动数字预滤波器的冲激响应表达式，并且提出一种数字预滤波器的设计方法，设计了一种优化数字预滤波器。