Question: In an Integrated Access and Backhaul (IAB) scenario, what is the primary focus of the OTA Adjacent Channel Leakage Power Ratio (ACLR) measurement?
Option 1: To evaluate the power imbalance between simultaneous IAB-DU and IAB-MT transmissions.
Option 2: To assess the ratio of in-channel power to adjacent channel power for a transmitter, using TRP as the measured power.
Option 3: To determine the optimal transmission timing mode (e.g., 'Case6') for IAB-MT.
Option 4: To measure the receiver sensitivity on adjacent channels.
Explanation: ACLR is a key metric in wireless communications, focusing on the containment of transmitter power within assigned channels to minimize interference. By measuring the ratio of filtered mean power centered on the assigned channel frequency to that on an adjacent channel frequency (with TRP being the measured power), ACLR directly assesses how well a transmitter adheres to its allocated spectrum, thereby protecting adjacent channels from leakage. This is crucial for maintaining overall network performance and compliance with regulatory requirements in telecom networks.