I have one ad-fmcomms2-ebz with ad9361 and one ad-fmcomms4-ebz with ad9364. Now I use ad9361 as a launch board to transmit 16qam modulated signals using the 16qam_20m.txt you provided with zynq7000-zc702. And I use another zc702 board with ad9364 to receive the signal and display the constellation on the screen. But the constellation rotates quickly and is very vague. Over time, the constellation will not be seen, only a bunch of scattered points.
How can I see a clear and stable constellation？
Thanks in advance.