Spectrum Analyzer doesn't show proper spectrum

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Thomas Schütz
Thomas Schütz 2020-8-28
Hello everybody,
I am currently implementing a CDMA based transmitter in Simulink. I have implemented an I- and a Q-path which are both coded with the same code (OVSF Generator). The data signal is implemented such that it rotates through the constellation diagram.
The data signal has a bit duration of 0.8 µs and the chipping sequence has a chip duration of 0.1 µs, so all in all I'm getting a processing gain of 8.
After coding, the signal is QPSK modulated and then filtered by an root raised cosine filter, which upsamles the incoming signal by 5.
I know want to view the spectrum of the signal after it is filtered by the root raised cosine filter, but the shown signal doesn't look as it theoretically should. I have attached some pictures of my program so that you can see how I implemented the transmitter.

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