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BOOSTXL-AOA: How is Guard period in CTE is related to AOA parameters during sampling IQ samples

Akansha Verma
Expert 1220 points
Part Number: BOOSTXL-AOA


Hi,

I have set AOA parameters in pyhton script:

aoa_cte_scan_ovs = 4

aoa_cte_offset = 8

aoa_cte_time = 2

It means that CTE length is 16us and as i set Offset =8us, it means Array will start sampling after 8us.

That is why i am getting 32 samples of 1 packet.

Along with this when i gone through RTLS Toolbox, i saw that guard time as set in AOA Passive is 4us thats why they have taken the offset  of 32 samples while calculating AOA observed on RTLS monitor.

Do i need to take care of this guard  period when setting my AOA parameters in python script?

Thanks

AKANSHA

  • 0
    TI__Intellectual 1670 points

    Hi Akansha,

    What device are you using for this, and what version of the SDK?

    Akansha Verma said:
    guard time as set in AOA Passive is 4us

    Where do you see this? What file and line?

    Best regards,

    Vetle

  • 0
    TI__Guru 56335 points

    Hi,

    The reason for taking the offset for 32 is because of the reference period is set to 8 us, which equals to 32 samples, not because of the guard time. 

    During the reference period, there is no antenna switching happening, therefore, we don't use those 32 samples for calculation.

    Guard time which is controlled by the cte_offset parameter, does not produce any I/Q data in this period.