文件名称:
I/Q 信号 encode information. Frequency
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上传时间: 2012-02-02
详细说明: I/Q 信号详解 If we think about possible sine wave parameters that we can manipulate, the equation above makes it clear we are limited to making changes to the amplitude, frequency, and phase of a sine wave to encode information. Frequency is simply the rate of change of phase of a sine wave (frequency is the first derivative of phase), so these two components of the sine wave equation can be collectively referred to as the phase angle. Therefore, we can represent the instantaneous state of a sine wave with a vector in the complex pl ane containing amplitude (magnitude) and phase coordinates in a polar coordinate system. ...展开收缩
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