Question: In a 3GPP-defined FDD (Frequency Division Duplex) scenario, what is the primary objective of transmitting a predefined test signal mimicking a high-speed train channel to a User Equipment (UE) receiver?
Option 1: To evaluate the UE's ability to maintain a Block Error Rate (BLER) below a specified threshold for both serving and adjacent cell signals.
Option 2: To assess the UE's handover performance between serving and adjacent cells in high-speed scenarios.
Option 3: To test the UE's transmitter output power under varying channel conditions.
Option 4: To verify the UE's support for multiple frequency bands.
Explanation: This question requires understanding of telecom testing protocols, specifically those related to receiver sensitivity and performance in varied (e.g., high-speed train) channel conditions. The correct answer highlights the focus on evaluating the UE's receiver capability to maintain a low BLER for both serving and adjacent cell signals, crucial for ensuring seamless communication in mobile scenarios, like maintaining call quality during high-speed travel.