Computer Hardware Terms, Glossary and Dictionary

Digital Up Converter(DUC), a key component for digital radio and 3G communications, is a digital circuit which implements the conversion of a complex digital baseband signal to a real passband signal. The input complex baseband signal is sampled at a relatively low sampling rate, typically the digital modulation symbol rate. The baseband signal is filtered and converted to a higher sampling rate before being modulated onto a direct digitally synthesized (DDS) carrier frequency. The DUC typically performs pulse shaping and modulation of an intermediate carrier frequency appropriate for driving a final analog upconverter and is used extensively in wireless and wireline communication systems.

Related Terms

DUC: Digital Up Converter