In order to decrease the mirror frequency interference, cross interference and inter-modulation interference, double IF (Intermediate frequency) is adopted in the receiver.
为了降低镜频干扰、交调和互调干扰，接收机采用了双中频方案。
The paper describes the mechanism of origination of cross-modulation interference in CATV and a method for fixing it. The formulae on mathematics of cross-modulation interference are derived.
从数学角度出发，推导出了CATV系统交调干扰电平的数学表达式，并阐述了CATV系统交调干扰的产生机理以及排除方法．。
Simulation results show that this method can effectively excise noise frequency modulation interference and the correlation output is improved obviously, especially for the strong interference.
仿真结果表明该方法可以有效地消除干扰，使相关输出得到显著改善，尤其是对强干扰效果更佳。
Simulation results show that this method can effectively excise noise frequency modulation interference and the correlation output is improved obviously, especially for the strong interference.
仿真结果表明该方法可以有效地消除干扰，使相关输出得到显著改善，尤其是对强干扰效果更佳。
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