Question: For a UTRA FDD UE, what is the frequency range relative to the UE centre carrier frequency to which the spectrum emission mask applies?
Option 1: Up to 1 MHz away from the UE centre carrier frequency
Option 2: Between 5 MHz and 20 MHz away from the UE centre carrier frequency
Option 3: Between 2.5 MHz and 12.5 MHz away from the UE centre carrier frequency
Option 4: From 25 MHz to 50 MHz away from the UE centre carrier frequency
Explanation: This is correct because, according to telecom standards for UTRA FDD UEs, the spectrum emission mask's applicability is defined within a specific range relative to the UE's center carrier frequency. The correct range ensures controlled out-of-channel emissions, maintaining spectral efficiency and compliance in wireless communications, between 2.5 MHz and 12.5 MHz away from the UE centre carrier frequency.