I used two AD9371（USRP N310）, one as tx and one as rx.
tx sends QPSK data, rx receives data and calculates EVM.
The calculation results show that the EVM of different sub-carriers differ greatly. What may be the cause of this phenomenon？
I used two AD9371（USRP N310）, one as tx and one as rx.
tx sends QPSK data, rx receives data and calculates EVM.
The calculation results show that the EVM of different sub-carriers differ greatly. What may be the cause of this phenomenon？
