Question: In a TDD system, what determines the reporting accuracy of the Channel Quality Indicator (CQI) in environments with AWGN and static orthogonality?
Option 1: Only the reporting variance of the CQI measurements.
Option 2: Both the reporting variance and the Block Error Rate (BLER) performance indicated by the reported CQI median transport format.
Option 3: The type of Multiple Input Multiple Output (MIMO) configuration used by the User Equipment (UE).
Option 4: The specific release version of the UE's category, starting from Release 8.
Explanation: The reporting accuracy of CQI in specified environments is influenced by two key factors: how consistently (variance) the CQI is reported and how well (BLER performance) the transport format indicated by the median reported CQI handles data transmission. This ensures that both the reliability (low variance) and effectiveness (good BLER performance) of CQI reporting are considered, reflecting a nuanced understanding of telecom network performance optimization.