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USRP B210 BPS modulation and demodulation BER problem

Hello all,

 

I have USRP B210 and I am using it with Labview. I am simulating niUSRP EX PSK Tx/Rx.vi examples. I have also used MT Calculate BER.vi block to calculate BER of PN sequences. I am using BPSK and using 6 samples per symbol. The problem is that my BER output is switching 1 and 0 when the reset switch is True. I think it should be 0 or close to zero. it is showing zero but I dont know why it is showing 1 sometimes.

 

Another problem is that if use 8 samples per symbol BER is always 1.

 

I also want an example program for detecting PN sequence on Rx side, I am using cross correlation  technique but I am not getting the correct results.

 

Thank you.

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Message 1 of 3
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Hi aster_yeyo,

What trigger threshold and confidence are you using for the MT Calculate BER.vi?

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default values

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