AWR1843BOOST: MRR Beamsteering to AWR2944

Bruce Hu

Intellectual 300 points

Part Number: AWR1843BOOST
Other Parts Discussed in Thread: AWR2944, AWR1843

Tool/software:

If we'd like to porting AWR1843 MRR Beamsteering example to AWR2944, any project base we can do it?

Thanks

BRs

Bruce

5 days ago

0 Samhitha Bobba 5 days ago

TI__Genius 11740 points

Hi Bruce,

Refer to (+) [FAQ] What are the benefits and SW migration effort moving to AWR2944 from AWR1642/AWR1843? - Sensors forum - Sensors - TI E2E support forums. There is no specific application as a base to port from AWR1843 to AWR2944. The above link will help you in understanding the high-level difference and changes needed to migrate to AWR2944.

Regards,

Samhitha

0 Bruce Hu 5 days ago in reply to Samhitha Bobba

Intellectual 300 points

Hi Samhitha.

Per the refernce, does it mean AWR2944 can not set TDM-MIMO, it only has DDMA?

And how to set TX beamforming? Any example we can refer to ?

The signal processing chain has changed a quite lot from 1^st gen AWR devices to the 2^nd generation AWR devices. Unlike the 1^st generation devices which have the TDM-MIMO chain wherein only 1-Tx chirps at a single time instant, the 2^nd generation AWR devices have all the 4-Tx chirping at the same time with a phase shift.

Thanks

BRs

Bruce

0 Samhitha Bobba 4 days ago in reply to Bruce Hu

TI__Genius 11740 points

Hi Bruce,

mmwave_mcuplus_sdk_<VER> has both TDM and DDM demo. But CCS project for TDM demo is not available.

Path to AWR2944 TDM demo: "C:\ti\mmwave_mcuplus_sdk_04_07_00_01\mmwave_mcuplus_sdk_04_07_00_01\ti\demo\awr294x\mmw"

Follow the steps mentioned in "C:\ti\mmwave_mcuplus_sdk_04_07_00_01\mmwave_mcuplus_sdk_04_07_00_01\docs\mmwave_mcuplus_sdk_user_guide.pdf" to set the environment variables and build the demo.

For queries regarding processing chain and demo, refer to "C:/ti/mmwave_mcuplus_sdk_04_07_00_01/mmwave_mcuplus_sdk_04_07_00_01/docs/mmwave_sdk_module_documentation.html".

Regards,

Samhitha

0 Bruce Hu 4 days ago in reply to Samhitha Bobba

Intellectual 300 points

Hi Samhitha,

For AWR2944 HECR example, could you please provide the radar config ?

DDMA is set in radar config or in code setting?

Thanks

BRs

Bruce

0 Samhitha Bobba 4 days ago in reply to Bruce Hu

TI__Genius 11740 points

Hi Bruce,

HECR demo uses DDM processing chain. The processing chain is different for TDM and DDM. It's not just the change in configuration. If you want to work on TDM processing chain, please use the SDK demo.

Regards,

Samhitha

0 Bruce Hu 1 day ago in reply to Samhitha Bobba

Intellectual 300 points

Hi Samhitha,

For AEB(automatic emergency braking) application, which method you will suggest? DDMA or TX beamforming?

Thanks.

BRs

Bruce

0 Samhitha Bobba 1 day ago in reply to Bruce Hu

TI__Genius 11740 points

Hi Bruce,

It's based on your requirements. If you want to focus in the single direction for longer distance, Tx beamforming will be beneficial else you can use DDM based application.

Regards,

Samhitha

0 Bruce Hu 1 day ago in reply to Samhitha Bobba

Intellectual 300 points

Hi Samhitha,

Is it possible to set TX beamforming based on DDM in the same frame?

Thanks

BRs

Bruce

0 Samhitha Bobba 12 hours ago in reply to Bruce Hu

TI__Genius 11740 points

Hi Bruce,

You can configure the Tx phase shifters according to your requirement. Following is a screenshot depicting the per chirp phase shift of each Tx in DDM processing chain -

Can you please help me in understanding what did you mean by "set TX beamforming based on DDM"?

Regards,

Samhitha

0 Bruce Hu 11 hours ago in reply to Samhitha Bobba

Intellectual 300 points

Hi Samhitha,

I mean if I can set TX beamforming in all TX channel on DDMA processing chain?

Take HECR as an example, it's frame based chirps(dfeDataOutputMode 1) with DDMA processing chain.

May I set TX beamforming on it (dfeDataOutputMode 1) ? Or it need to use advanced frame config(dfeDataOutputMode 3) , one subframe for DDMA and another subframe for TX beamforming?

Thanks

BRs

Bruce