Simulink model QPSK Receiver

[strath-sdr]

Simulink model QPSK Receiver

[dnorthcote]

Hi Robert,

I was able to run the axi_qpsk_rx_csync model okay. Is this the one you are referring to in your message?

You may need to press ctrl+d twice to update the Simulink model correctly and remove internal errors caused by System Generator. If updating the model twice does not work, I have attached the axi_qpsk_rx_csync model that works fine on my end, perhaps this may help: axi_qpsk_rx_csync.zip

Lastly, you may also be interested in our BPSK model here rfsoc_radio. This project uses coarse frequency correction for a complex signal. Additionally, the design also transmits a "hello world" message in loopback, or between RFSoC boards.

Let me know if I can help further,

Kind Regards,
David.

[robertstar]

I looked at the BPSK receiver model, it has a BPSK modulator, a communication channel and a receiver. So, I want to make the same model for the QPSK. Tell me how to make a QPSK modulator with a doppler offset.

[dnorthcote]

Hi Robert,

I'm glad to hear that you were able to work through the BPSK receiver model. Unfortunately, I won't be able to help with a QPSK modulator with doppler offset. You could check out this interesting MATLAB page for information on how to begin modelling doppler: https://www.mathworks.com/help/comm/ref/doppler.html?s_tid=doc_ta

If the provided axi_qpsk_rx_csync model worked okay, please close this issue. If I can help further with StrathSDR projects, let me know,

Kind Regards,
David.