Receiving junk data using zc706 and fmcomms3 with QPSK example

Hi,

I am using zc706 and fmcomms3 eval boards for SDR application with the examples mentioned in the links for trasmitter and reciever https://in.mathworks.com/help/supportpkg/xilinxzynqbasedradio/ug/qpsk-transmitter-using-analog-devices-ad9361-ad9364.html

https://in.mathworks.com/help/supportpkg/xilinxzynqbasedradio/ug/qpsk-receiver-using-analog-devices-ad9361-ad9364.html

Installed all the neccessary add-ons required and followed the procedure to work with the above QPSKFPGA simulink models, we are recieving some junk data after 10 to 15 seconds. I have checked with the connectivity of carrier boards, ethernet cable and RF Cable, all the connections are perfect, firewall is off yet recieving some Junk data at the reciever end.

Can someone suggest on this please. Thanks in advance.

--

Thanks & Regards

Karthik Sharma

Answer 1

[Ousman Sadiq]

Hey, Karthik,

Do you see any underflow messages (like this) from the transmitting model?

Regards,

Ousman

[karthik sharma]

hi Ousman,

Thank you for the response.

No underflow messages from transmitting model.

We are recieving the data for 10 to 15 seconds, and junk data thereafter.

--

Thanks & regards

Karthik

[karthik sharma]

can some one suggest the correct settings for ad936x (ad9361) transmitter and reciever for QPSK transmitter/ reciever using Analog Devices AD9361/ Ad9364. Example for the below link https://in.mathworks.com/help/supportpkg/xilinxzynqbasedradio/ug/qpsk-receiver-using-analog-devices-ad9361-ad9364.html

At the reciever end we are recieving junk data after 10- 15 seconds. when the option bypass user logic in ad936x transmitter is enabled the junk data is reduced. May i know reason for this.

--

Thanks & regards

karthik