Question: In the context of Total Radiated Sensitivity (TRS) measurement for a User Equipment (UE), what is the primary basis for calculating TRS in a Rayleigh fading 3-dimensional isotropic environment?
Option 1: By averaging the power received across all sampling intervals for theta and phi.
Option 2: Through direct measurement of the effective isotropic sensitivity (EIS) for each polarization.
Option 3: By searching for the lowest power received by the UE's Logical Measurement Equipment (LME) that achieves a Bit Error Rate (BER) better than the specified target BER level, across discrete field combinations.
Option 4: Using a fixed reference power transfer function without calibration measurements.
Explanation: In a Rayleigh fading 3-dimensional isotropic environment, TRS calculation is based on identifying the minimum power at which the UE's Logical Measurement Equipment (LME) achieves a Bit Error Rate (BER) that meets or exceeds the target BER threshold. This involves testing across various field combinations to find this minimum power point, making Option 3 the correct approach as per the provided context.