然后采用正交数字上变频（DUC）技术进行基带信号数字域调制和频率变换。

Then, a solution based on Digital Up Converter(DUC) was proposed, which implemented the conversion of a complex digital baseband signal to a real passband signal.

youdao

然后采用正交数字上变频（DUC）技术进行基带信号数字域调制和频率变换。

Then, a solution based on Digital Up Converter(DUC) was proposed, which implemented the conversion of a complex digital baseband signal to a real passband signal.

youdao