Question: In 3GPP conformance testing for UE OTA antenna performance, how is the uncertainty calculated when determining the output power step resolution for BER (Bit Error Rate) measurements?
Option 1: By multiplying the output power step used in the BER measurement by a factor of 4
Option 2: By dividing the output power step used in the BER measurement by a factor related to the Gaussian distribution
Option 3: By dividing the output power step used in the BER measurement by a factor of 2, assuming a rectangular distribution
Option 4: By adding a fixed margin to the output power step used in the BER measurement, as defined by the test equipment manufacturer
Explanation: This is correct because, according to the provided context, the uncertainty in BER measurements due to output power step resolution is calculated specifically by dividing the output power step by a factor of 2, with the assumption of a rectangular distribution. This method provides a straightforward way to quantify the uncertainty introduced by the discrete nature of the power steps during testing.