QPSK编码的DSP实现四相相移键控信号简称“QPSK”。它分为绝对相移和相对相移两种。由于绝对相

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四相相移键控信号简称“QPSK”。它分为绝对相移和相对相移两种。由于绝对相移方式存在相位模糊问题，所以在实际中主要采用相对移相方式QDPSK。它具有一系列独特的优点，目前已经广泛应用于无线通信中，成为现代通信中一种十分重要的调制解调方式。

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Packet : qpsk.doc filelist

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