Question: For a UTRA FDD User Equipment (UE) supporting DC-HSDPA, which of the following statements accurately describes the applicability of receiver single link performance requirements for High Speed Physical Downlink Shared Channel (HS-DSCH) in multi-path fading environments?
Option 1: Applies to all UEs with DC-HSDPA capability categories 15-20, starting from Release 7.
Option 2: Applies to UEs with DC-HSDPA UE capability categories 21-24, but only for Release 8 and later, excluding enhanced performance requirements type 3i.
Option 3: Applies to all types of UTRA FDD UEs supporting DC-HSDPA, regardless of the capability category or release, including optional enhancements.
Option 4: Applies specifically to UEs with DC-HSDPA UE capability categories 21-24 for Release 8 and later, and categories 25-28 for Release 9 and later, both including the optional enhanced performance requirements type 3i.
Explanation: This is correct because the question's conditions (applicability based on specific DC-HSDPA UE capability categories and their respective Releases, including consideration of optional enhanced performance requirements type 3i) are precisely matched by Option 4. It accurately reflects the nuanced applicability criteria for receiver single link performance testing in multi-path fading environments for HS-DSCH in UTRA FDD UEs supporting DC-HSDPA.