Carrierless Amplitude and Phase Modulation has emerged as the DE facto standard, having captured most of the nascent market to date.

无载波振幅和相位调制正在成为事实上的标准，迄今已占了这个新生市场的大部分。

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Statistics histogram data processing scheme is designed. Standard deviation of frequency modulation is found out according to normal distribution characteristics.

设计了统计直方图数据处理方案，按照正态分布的特性找出了寄生频率调制的标准偏差。

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Quadrature Amplitude Modulation (QAM) is used to transfer signals by digital TV system based on DVB_C standard.

基于DVB_C标准的数字电视系统采用正交幅度调制(QAM)传送信号。

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