Sorry for late response.
Today I did some experiments.
If I do a reset in limesuitegui and then upload this lte_ini.ini file, there will be a warning “upload all registers failed”.
But if I push the default button after the reset and before uploading the ini file. It shows something looks like a test signal. But still Channel B is very different from Channel A.
This is LMS1 channel A
This is LMS1 channel B
This is LMS1 MIMO A&B (when I didn’t check Enable MIMO in the upper gui)
For LMS2, it’s pretty much the same as LMS1.
What’s the difference between “enable mimo” in the gui and “LMS1 MIMO” in data reading of fft viewer?
When I checked “enable mimo” with lte_ini.ini file, the fft viewer seems not working normally.
Then I tried the other experiment by just pushing the reset and default button. I also checked enable mimo, and tune all lms to 434MHz. Finally, I am able to see the signal from all 4 channels. Although the signal power in different channels are still different, I think after some fine tuning in gain stages, I will be able to make use of that. In LimeSuiteGUI, I can receive 2 channels of one lms chips simultaneously, but if I directly call limesuite.so, is it possible to receive all 4 channels simultaneously?