Question: For a UTRA FDD UE supporting UL CLTD with HSDPA and E-DCH (Release 11 and later), what is the frequency range relative to the UE centre carrier frequency to which the spectrum emission mask applies?
Option 1: Between 2.5 MHz and 12.5 MHz away from the UE centre carrier frequency
Option 2: Within 1 MHz of the UE centre carrier frequency
Option 3: Between 5 MHz and 20 MHz away from the UE centre carrier frequency
Option 4: Up to 25 MHz on either side of the UE centre carrier frequency
Explanation: This is because, for specified UTRA FDD UEs (supporting UL CLTD with HSDPA and E-DCH from Release 11 onwards), the spectrum emission mask applies within a specific frequency range relative to the UE's centre carrier frequency. The correct range, ensuring controlled out-of-channel emissions relative to the filtered mean power of the UE carrier, is between 2.5 MHz and 12.5 MHz away from this central point, crucial for maintaining spectral efficiency and minimizing interference in wireless communications.