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Please leave tutorials-related feedback (either for an individual tutorial or overall organization) in the [[Talk:Tutorials|Discussion]] page of this # [[QPSK_Mod_and_Demod|QPSK Mod and Demod]]

...esentation of signals--which in fact are complex signals. For this reason, complex signals are essential in GNURadio. ...mple modulation schemes used in HAM radio are presented. While introducing complex signals can be seen as increasing complexity, we will see that it drastical