Question: For a UTRA FDD User Equipment (UE), which of the following statements is accurate regarding the applicability of Closed Loop Transmit Diversity modes as defined by receive characteristics of the Dedicated Channel (DCH) mapped into the Dedicated Physical Channel (DPCH)?
Option 1: Both Closed Loop Mode 1 and Mode 2 are applicable to all UTRA FDD UE releases.
Option 2: Closed Loop Mode 1 is specific to Release 99 and Release 4 UTRA FDD UE, while Mode 2 applies to all releases.
Option 3: The applicability of Closed Loop Modes does not depend on the UTRA FDD UE release.
Option 4: Closed Loop Mode 1 applies to all types of UTRA for FDD UE, but Mode 2 is limited to Release 99 and Release 4.
Explanation: This is correct because requirements for Closed Loop Mode 1 are universally applicable to all types of UTRA for FDD User Equipment (UE), ensuring broad compatibility. In contrast, Closed Loop Mode 2 has limited applicability, specifically tailored for Release 99 and Release 4 of UTRA FDD UE, highlighting a nuanced distinction based on the release version of the UE technology.