dchard

Well, I will be able to do ref power calibration and modulation analysis, as I have access to a vector signal analyzer that can do LTE FDD and TDD. Atm...

This is just a hobby for me, although I do work in professional telecom. Non the less I will try to look at this next week, and run some tests....

Just a quick update: your mods were built cleanly, and starts as it should. I have no core on the train, so tests will follow later: ``` Opening 1 channels...

@arun1969 I am doing some tests and I have some partial success: 1. The test phone does see the 5MHz LTE signal at 1822.6MHz. The signal level is very week....

This is the vector signal analysis (Equalized to RS) of SRS-RAN LTE with XTRX:  As it is visible, all parameters are within tolerance, except for the freq error, but...

@arun1969 A couple more information: That weird signal that stays even after the SRS-ENB is stopped, is also present on TX port 2 during the normal operation. I also tried...

I re-checked the cabling and the weird constellation diagram (with no equalization) is coming from the SDR, no doubt. I also tested with 10 and 20MHz. On 10MHz the signal...

Just out of comparison, this is a LimeSDR Mini outputting the same 5MHz LTE signal (**no equalization**):  Clearly a lot better, then with the XTRX.

@arun1969 don't worry, I am also quite busy. I am trying to gather as much useful data for you, as it is possible. The short summary of all the above...

Hi @arun1969 Lets start with the good news: the device is now closed properly, there is no spurious emissions after the srsenb app is closed. I will need to take...