AWR1243BOOST: compRangeBiasAndRxChanPhase implementing

Fatima-ezzahraa souad

Tool/software:

Hello TI,

I have a measurement accuracy issue. I want to use compRangeBiasAndRxChanPhase to compensate for range bias and achieve high accuracy. How can I integrate it into a LUA file, or how can I correct it in TI's mmwave studio?

Best regards,

SOUAD

over 1 year ago

0 Cesar over 1 year ago

TI__Guru**** 153444 points

Hi,

This compensation would need to be performed in the processing code. mmWave Studio performs the required configuration to generate the raw ADC data. It does not perform post processing. You would need to write a matlab/python script to compensate for range bias.

thank you
Cesar

0 Fatima-ezzahraa souad over 1 year ago in reply to Cesar

Prodigy 120 points

Hello,

There is a window in mmwave studio called CalibConfig. When I select “set” after “DataCapture,” a calibration report is generated, but I don't know how to use it in Matalb.

Best regards,

SOUAD

0 Cesar over 1 year ago in reply to Fatima-ezzahraa souad

TI__Guru**** 153444 points

This information is related to the silicon self calibration. There are more details in this Application Report

https://www.ti.com/lit/an/spracf4c/spracf4c.pdf

The compRangeBiasAndRxChanPhase is a different type of calibration. This calibration is required because of the imperfections created by the EVM traces on the EVM. So, these are EVM related calibrations.

Thank you
Cesar

0 Fatima-ezzahraa souad over 1 year ago in reply to Cesar

Prodigy 120 points

Hello,

Thank you for your help.

To obtain a very accurate measurement, should I use auto-calibration to calibrate the temperature and Rx gain, as well as compRangeBiasAndRxChanPhase to eliminate imperfections created by the EVM?

Best regards,

SOUAD

0 Cesar over 1 year ago in reply to Fatima-ezzahraa souad

TI__Guru**** 153444 points

Yes, both should be performed.

The self calibration just needs to be enabled and will be performed by the silicon firmware.

The compRangeBiasAndRxChanPhase must be performed by the post processing after the ADC data has been captured

thank you
Cesar

0 Fatima-ezzahraa souad over 1 year ago in reply to Cesar

Prodigy 120 points

Thank you.

Yes, but when I enabled auto-calibration, I only get a calibration report; I don't know whether the calibration has been performed or not. For compRangeBiasAndRxChanPhase, is there a Matlab script that I can use as a reference to write my own script?

Best regards,

Souad

0 Cesar over 1 year ago in reply to Fatima-ezzahraa souad

TI__Guru**** 153444 points

Yes, the auto-calibration just needs to be enabled. If you don't get an error than it works.

For compRangeBiasAndRxChanPhase there is C code in an older mmWave SDK but we don't have Matlab code

MMWAVE-SDK Software development kit (SDK) | TI.com

After installing, please review

Millimeter Wave (mmw) Demo for XWR16XX (16xx is an older platform that has 2Tx, 4Rx)

See section

Range Bias and Rx Channel Gain/Offset Measurement and Compensation

The C code is provided in

C:\ti\mmwave_sdk_02_01_00_04\packages\ti\demo\xwr16xx\mmw\dss\dss_data_path.c

Please see "

MmwDemo_rxChanPhaseBiasCompensation()

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AWR1243BOOST: compRangeBiasAndRxChanPhase implementing

Range Bias and Rx Channel Gain/Offset Measurement and Compensation