AWR1443BOOST: AWR1443： Questions about multi-person breathing and heartbeat detection with AOA

Hi，

Recently I wanted to use the AWR1443 for multi-person breathing and heartbeat testing, so I read your company's paper: Vital Signs Monitoring of Multiple People using a FMCW Millimeter-Wave Sensor.

This paper uses AOA to obtain Range-Angle bin of multiple targets and performs multi-target separation by using weight Wi. 

The processing flow is shown in the figure below.

Now, I did not find any calculation or acquisition of weights when I read the entire paper.

So I want to know How should I get the weight Wi?

Thanks,

Sleepybear.