Question: What is a prerequisite for a User Equipment (UE) to support MPDCCH performance improvement with reciprocity-based candidates for TDD in coverage enhancement mode A?
Option 1: The UE must also support crs-ChEstMPDCCH-CE-ModeA-r16.
Option 2: The UE needs to operate exclusively in Frequency Division Duplex (FDD) mode.
Option 3: The UE has to be capable of only single-stream transmission.
Option 4: The UE must disable all feedback mechanisms for this feature.
Explanation: According to E-UTRA specifications, a UE must also support crs-ChEstMPDCCH-CE-ModeA-r16 to support MPDCCH performance improvement with reciprocity-based candidates for TDD in coverage enhancement mode A, ensuring coherence in the UE's capability to enhance performance under specific operational modes.