Modulation Order 调制阶数
high-order QAM modulation 高阶QAM调制
second-order inter-modulation 二阶互调
Thus, method may be used to effectively improve the performance of high-order modulation OFDM systems.
该方法可有效应用于提高高阶调制OFDM系统的性能。
In order to measure the Modulation Transfer Function (MTF) of image sensor conveniently, contact measurement using rectangle template is proposed based on sine template contact measurement.
为了方便地测量图像传感器的调制传递函数(MTF)，在正弦模板法基础上，提出了矩形模板接触测量的方法。
In order to improve the frequency stability of the frequency modulation circuit and the crystal oscillator, using the temperature compensation circuit is extremely effective method.
为了提高调频电路和晶体振荡器的频率稳定度，采用温度补偿电路是一种极其有效的方法。
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