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技术在快速发展进步。因此,我们建立了易于使用的术语汇编,帮助您更好地了解影响您业务的术语、技术和趋势。

QAM

Quadrature Amplitude Modulation (Digital)

QAM a signal in which two carriers are shifted in phase by 90 degrees (i.e. sine and cosine) and are modulated and combined. Because of their 90° phase difference they are in quadrature and this gives rise to the name

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