AWR2944EVM: mmw demo visualizer

Naoya

Prodigy 90 points

Part Number: AWR2944EVM

Hello,

I have some questions regarding mmw demo visualiser's processing.

I am using Range Profile in mmw demo visualiser.

1) I think that the data shown in the Range Profile are after Doppler FFT.
Is my thought correct?

2) Are Range Profile data processed in AWR2944EVM?

3) Are the Range Profile data processed using window function?

4) Is the Relative Power of Range Profile graph calculate as 20log10(Data)?

5) How are Noise Profile values calculated?

Regards,

Naoya

over 2 years ago

0 Kaushik Gowda over 2 years ago

TI__Mastermind 20605 points

Hi Naoya,

Please find my responses below:

Yes. The range profile is obtained from the zero doppler which is after the doppler FFT.
Yes. You can read more about the datapath and processing in the SDK docs.
Yes. Windowing is applied before both Range and Doppler FFT.
Yes. The range profile will be expressed in the base of log10
Please read the documentation provided in the SDK to get an understanding of this.

Regards,

Kaushik

0 Naoya over 2 years ago in reply to Kaushik Gowda

Prodigy 90 points

Hi Kaushik,

Thank you for your responses.

I have additional questions.

1) What window are it used before Range and Doppler FFT respectively in mmwave demo?

2) Is AWR2944EVM's Tx power in mmwave demo 12dBm?

Regards,

Naoya

0 Kaushik Gowda over 2 years ago in reply to Naoya

TI__Mastermind 20605 points

Hi Naoya,

You can refer to this in the window gen function call before the window coefficients are loaded into the HWA window RAM.
Are you referring to the Tx power backoff or just something like a max power out?

Regards,

Kaushik

0 Naoya over 2 years ago in reply to Kaushik Gowda

Prodigy 90 points

Hi Kaushik,

1. Using debug mode of mmwave demo, I investigated Range and Doppler FFT window types in the window gen function (mmwavelib_windowCoef_gen).
However, I didn't find it because the window gen function did not hit the breakpoint.
Could you tell me how to call the window gen function?

2. I would like to know AWR2944EVM' Tx power of the first setting in mmwave demo.

Regards,

Naoya

0 Kaushik Gowda over 2 years ago in reply to Naoya

TI__Mastermind 20605 points

Hi Naoya,

You can create a global variable and memcpy the generated data from the window function and view it in CCS directly.
What is this setting you are referring to? Would be great if you shared a picture here.

Regards,

Kaushik

0 Naoya over 2 years ago in reply to Kaushik Gowda

Prodigy 90 points

Hi Kaushik,

1. I found the description for Range and Doppler FFT window in a document.

2. I would like to know the Tx power back off and the max power.

Regards,

Naoya

+1 Kaushik Gowda over 2 years ago in reply to Naoya

TI__Mastermind 20605 points

Hi Naoya,

Hope this has resolved your query!
This information can be found in the datasheet for the given device.
https://www.ti.com/lit/gpn/awr2944

Regards,

Kaushik

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AWR2944EVM: mmw demo visualizer