Question: For LTE-based 5G terrestrial broadcast base stations operating in band 107 or 108, what is the minimum ACLR (Adjacent Channel Leakage Ratio) requirement, as per regulatory compliance?
Option 1: 30 dB, with flexibility for regional adjustments
Option 2: 40 dB, applicable worldwide without exceptions
Option 3: 45 dB, with the possibility of stricter regional regulations
Option 4: 50 dB, as a fixed global standard for all broadcasts
Explanation: The correct answer is Option 3 because the ACLR requirement for LTE-based 5G terrestrial broadcast base stations in bands 107 or 108 must be at least 45 dB, with regional regulations possibly imposing stricter (higher) requirements.