IWR1642BOOST: Time Division Multiplexing in MIMO

HI, there:

Yes, it is possible.  Just configure total 4 chirps instead of 2.  Enable TX1 in chirp 0 and chirp 1 and enable TX2 in chirp 2 and chirp 3. 

Best,

Zigang 

Hi, zigang Yang

Thank you for fast reply.

I have additional question.

If so, when using functions provided by TI, is it possible to match up (Rx1 & Rx2 by T1), (Rx3 & Rx4 by T1') and others as shown in the picture below?

This is similar to using four independent 1T 2Rx radars.

Best regards,

HI, 

Are you trying to simulate a 4 TX, 2 RX case?   I guess you can do that.  Just need to select the right RX for post process.  But you may need to change the demo code to align with this change.  

I forget to mention that the you may need to change the demo code as well on the configuration of T1, T1, T2, T2, even with all 4 RX used. 

Best,

Zigang

Hi, Zigang

partially yes. The concept we have is  to distinguish between target and ground clutter using 2Tx, 4Rx Radar such as IWR1642 or IWR6843.

I know that we need to change the demo code to do.

So, If I edit the demo code, can i use only partial Rx instead of using all Rx on IWR1642 for respectively signal processing?

many thanks

Of course you can use part of the RX channels.  You will get ADC samples for all the RXs.  After range FFT, you probably can change the code to copy part of the RX channels to radar cube.  Then the rest of the Doppler, detection, DOA probably will be similar to the original code.  You may need to change some derived parameters as well.   If you want to apply gain/phase compensation, change may need.

This is all I can think of.   

Best,

Zigang 

Thank you very much for your answer.

Okay, I solved my issue.

Have a  good day.

Best regards,