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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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。

youdao