IWRL6432: About Beam Forming

user6228344

Intellectual 380 points

Part Number: IWRL6432
Other Parts Discussed in Thread: IWR6843

Tool/software:

Can IWRL6432 use Tx-Beam Forming and Rx-Beam Forming?

Also, do you have any white papers or application notes about them?

Thanks in advance.

3 months ago

0 Nathan Block 3 months ago

TI__Mastermind 31920 points

Hi,

The IWRL6432 cannot use TX beamforming, but it uses RX beamforming by default to estimate the angle of arrival of targets.

Best,

Nate

0 user6228344 3 months ago in reply to Nathan Block

Intellectual 380 points

Thank you for your reply.
We are also considering the IWR6843, which can use Tx beamforming.
Do you have any white papers or application notes about Tx beamforming?

0 Nathan Block 3 months ago in reply to user6228344

TI__Mastermind 31920 points

Yes,

See here.

https://dev.ti.com/tirex/explore/node?node=A__AE-Bpc-wQfi-OR.2V9TzCw__radar_toolbox__1AslXXD__LATEST&r=1AslXXD__1.00.00.26&r=1AslXXD__1.00.01.07&r=1AslXXD__1.30.00.05

Best,

Nate

+1 user6228344 2 months ago in reply to Nathan Block

Intellectual 380 points

Thank you for your replay.

0 user6228344 2 months ago in reply to Nathan Block

Intellectual 380 points

Excuse me.
I have more question.

I think IWRL6432 cannot do Tx beamforming because it only has two Tx antennas.
Why can't it do beamforming with two Tx antennas?

0 Josh Dye 2 months ago in reply to user6228344

TI__Genius 16051 points

Hello,

Nathan is currently out of office and will respond when he returns next week.

Best Regards,

Josh

+1 Nathan Block 2 months ago in reply to Josh Dye

TI__Mastermind 31920 points

Hi,

With only two antennas, you can't effectively direct the beam in a direction. TX beamforming happens by adding delays on different transmitters to push the beam in different directions. With only two transmitters, you cannot direct it effectively. Additionally, the IWRL6432 doesn't not have TX phase shifting hardware on-chip, so it's not possible.

Best,
Nate

0 user6228344 2 months ago in reply to Nathan Block

Intellectual 380 points

I understood.
Thank you so much.

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IWRL6432: About Beam Forming