channel data is zero in PCT IQ data extraction, distance estimation,

0 28 28.000000 23.000000 26.000000 -8.000000
0 29 22.500000 16.500000 14.000000 -15.500000
0 30 0.000000 0.000000 0.000000 0.000000
0 31 0.000000 0.000000 0.000000 0.000000
0 32 -10.000000 23.000000 -12.000000 16.000000
0 33 -27.000000 14.000000 6.000000 23.000000
0 34 -28.000000 21.000000 8.000000 27.000000

  1. Zero IQ Values: Why are the I/Q values reported as zero for both the Initiator and Reflector (e.g., channels 30 and 31)? What steps can I take to troubleshoot and resolve this issue?
  2. I have tried increasing the procedure length and the subevent length without success. What other Channel Sounding parameters should I adjust to ensure non-zero I/Q data is reliably collected? Even  certain I/Q values are zeros in the above screenshot. 
    Due to zero IQ values, ifft diatance estimated is recorded as 0.0000. How to resolve this issue?
  3. Procedure Count = 0 Behaviour: When the Procedure Count is set to zero (which typically implies an internal/default count):
    1.  On what basis does the system determine that 6, 7, or 8 subsets of 72 channel data will be collected?
    2. Can we modify this behaviour (while keeping the Procedure Count at 0) to collect a specific, user-defined number of 72-channel subsets?
  1. Distance Estimation with Procedure Count = 0: Given the random collection of 6, 7, or 8 subsets of 72 channels when Procedure Count = 0:
    1. Averaging Method: Is the distance estimated from each individual I/Q subset and then those distance estimates are averaged?
    2. . I/Q Averaging: Or are the I/Q values themselves averaged across all collected subsets, and then the final distance is calculated from the single resulting average I/Q set?
  1. What is the minimum number of 72-channel I/Q data sets typically required to achieve a specified level of accuracy for the estimated distance?
  2. Antenna Switching Data Acquisition: In a multiple antenna setup using antenna switching (e.g., an antenna array):
    1. Please describe the data collection sequence in terms of steps and sub-events.
    2. Specifically, is the full 72-channel I/Q data set collected for Antenna Path 1 before switching to Antenna Path 2, or is the I/Q data collected for different antenna paths simultaneously or interleaved during the sub-events?
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