No, you're not right! The output spectrum is input spectrum, point-wise multiplied with system spectrum (the bell shape). If your input was white, you'd be multiplying your bell shape with a constant and would be getting a bell shape.
Since your input isn't white, you're not doing that and not getting the bell shape – this is really basic. Best regards, Marcus On 11.08.20 12:45, Amir Hossein Aalipour wrote: > Hi, thank you for your reply > If by "white data" you mean random (pseudo noise) data, I should say no. It > is the samples of the audio file (you can see in the flow graph below). But > even if it was random, when modulated by GMSK, it should have the > bell-shaped spectrum!? Am I right? > Thanks.
