IWR1642: mmwave studio problem with iwr1642 channel configuration

Annie Liu

Part Number: IWR1642

Hi Team,

The customer is experiencing below issue and needs your help.

I would like to ask, where to choose the 1Tx launch and 2Tx launch settings for iwr1642 using mmwave studio. I tried to change the check box of the option box under chirp in the figure below (others use the default parameters). Channel, under the same conditions of other parameters, check Tx0 and Tx0Tx1 at the same time, there is no difference in the file size. If I choose one transmission channel and two transmission channels, it is wrong:
1. Please tell me how do I choose one or two transmission channels?
If there are no errors:
2. Does this mean that the number of transmission channels does not affect the file size?
last question:
3. What effect will the number of transmitting channels have?
Looking forward to your answer

Thanks,

Annie

over 4 years ago

0 zigang Yang over 4 years ago

TI__Mastermind 32905 points

Hi, Annie:

In order to do TDM MIMO, you need to configure two chirps,

1) the first chirp: profile ID = 0, start chirp = 0, end chirp ID = 0, enable TX0;

2) the second chirp: profile ID = 0 (same), start chirp = 1, end chip = 1, enable TX1.

Then in frame configuration, you will need to program start chirp = 0, and end chirp = 1.

In this way, you will be able to double the data size from the single TX case.

If you enable TX0 and TX1 in one chirp, you are enable TX1 and TX0 at the same time.

Best,

Zigang

0 zigang Yang over 4 years ago in reply to zigang Yang

TI__Mastermind 32905 points

Hi, Annie:

I have not heard from you. Can I assume that your problem has resolved?

Best,

Zigang

0 Annie Liu over 4 years ago in reply to zigang Yang

TI__Genius 10295 points

Hi Zigang,

I apologize for any delay in responding to your message due to Chinese Lunar New Year.

Customer has following question need your help.

He would like to know how to enable two Tx channels. Is this checked in this interface in sensorconfig?

0 zigang Yang over 4 years ago in reply to Annie Liu

TI__Mastermind 32905 points

HI, Annie:

Does your customer want to use TDM-MIMO mode to achieve 8 visual antenna and better angle resolution? or they want to enable TX1 and TX0 at the same time to increase the TX power?

Best,

Zigang

0 zigang Yang over 4 years ago in reply to zigang Yang

TI__Mastermind 32905 points

HI, Annie:

Hope your problem has been resolved. Since it has been a while that I have not receive from you, I am closing this thread. You can open another thread if you have further questions.

Best,

Zigang

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IWR1642: mmwave studio problem with iwr1642 channel configuration