Question: For a User Equipment (UE) supporting DC-HSDPA in a Frequency Division Duplexing (FDD) mode, what is the primary purpose of measuring Adjacent Channel Selectivity (ACS) in relation to receiving a W-CDMA signal?
Option 1: To evaluate the UE's transmitter power in the presence of adjacent channel interference.
Option 2: To assess the receiver's ability to filter out adjacent channel signals and maintain reception quality on its assigned channel frequency.
Option 3: To determine the UE's handover decision parameters between different base stations.
Option 4: To measure the UE's uplink data transmission speed in a congested network.
Explanation: ACS is crucial for understanding how well a receiver can isolate and receive its intended W-CDMA signal amidst signals from adjacent channels, impacting the receiver's ability to maintain signal quality and integrity.