... digital Hartley modulation: 数字哈脱莱调制 Digital Quadrature Modulation 数字正交解调 Digital Pulse Modulation 数位脉波调变 ...
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At the same time, we refrain mirror frequency effectively with the method of digital quadrature modulation (DQM).
同时，由于采用了数字正交调制，从而有效地提高了镜频抑制。
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。
QAM (Quadrature Amplitude modulation) has been widely used in various digital communication systems due to its high modulation efficiency.
正交幅度调制(QAM)具有较高的调制效率，被广泛应用于各种数字通信系统中。
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