Digital TV signal modulation is a message transmitting method which is expressed by some discrete states in carrier wave. Only carrier wave modulating parameter is detected.
数字电视信号的调制是用载波信号的某些离散状态来表征所传送的信息，在接收端只对载波信号的离散调制参量进行检测。
A type of electronic modulation in which the phase of a carrier wave is varied in order to transmit the information contained in the signal.
相位调制，调相：一种电子调幅，为了传递包含在信号中的信息，而使载波的相位改变。
In frequently used methods, sine wave is used as carrier with amplitude modulation (am), frequency modulation (FM) and phase modulation (PM) implied.
常用的调制方式使用正弦波作为载波并对其进行幅度调制(AM)和角度调制即调频(FM)或调相(PM)。
A novel scheme for optical millimeter (mm)-wave generation with optical carrier suppression(OCS) modulation by external modulator in a radio-over-fiber (ROF) system was proposed.
提出了一种改进的光载波抑制产生光毫米波的方法。
A novel scheme for optical millimeter (mm)-wave generation with optical carrier suppression(OCS) modulation by external modulator in a radio-over-fiber (ROF) system was proposed.
提出了一种改进的光载波抑制产生光毫米波的方法。
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