Different offset between IQ signals
Posted: Fri Aug 05, 2016 1:22 am
Hello,
I'm trying to run a simple loopback model on a bladeRF with a XB-200 transverter.
Loopback mode is set to "RF_LNA3".
My environment is below.
Windows 10
MATLAB/Simulink: R2016a
bladeRF-cli version: 1.4.0
libbladeRF version: 1.7.2
Firmware version: 2.0.0
FPGA version: 0.6.0
The graph displays transmitting sine waves (upper graph) and receiving sine waves (lower graph).
Two waves (yellow line and blue line) in each graph show I signals and Q signals.
Received IQ signals seem to have each offset at a different level.
That wasn't improved even if I executed "cal lms" "cal dc tx" "cal dc rx".
How should I improve this offset?
Thank you.
I'm trying to run a simple loopback model on a bladeRF with a XB-200 transverter.
Loopback mode is set to "RF_LNA3".
My environment is below.
Windows 10
MATLAB/Simulink: R2016a
bladeRF-cli version: 1.4.0
libbladeRF version: 1.7.2
Firmware version: 2.0.0
FPGA version: 0.6.0
The graph displays transmitting sine waves (upper graph) and receiving sine waves (lower graph).
Two waves (yellow line and blue line) in each graph show I signals and Q signals.
Received IQ signals seem to have each offset at a different level.
That wasn't improved even if I executed "cal lms" "cal dc tx" "cal dc rx".
How should I improve this offset?
Thank you.