HELP regarding B210 and B205mini-i in simulink

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ARHUM AHMAD
ARHUM AHMAD 2021-11-7
I am using B210 and B205mini-i. I have a few doubts. I hope you can help me. Doubts are listed below:
1) In matlab simulink there is an option of master clock rate, but no description can you please elaborate on that. Also it has some limit i.e., 56e6 Hz what happens if I use more than this limit.
2) Is there any relation to select center frequency, master clock rate, interpolation/decimation factor and gain.
3) Can you give the range of suitable gain.
4) There is an example in matlab for frequency calibration while using that when I plot the spectrum it's the same with or without antenna which suggest it is not working correctly. Can you suggest where the problem might be?
5) I am trying to send a simple QPSK signal and receive(example from matlab simulink). All blocks work fine in simulation but when I use USRP for Tx/Rx BER is always 0.5 and I think usrp is not detecting any signal. Is there any parameter mismatch?

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