Question: For a UTRA FDD UE (User Equipment) supporting dual band 4C-HSDPA, what is the primary purpose of measuring Spurious Response as defined in the context of radio transmission and reception?
Option 1: To evaluate the transmitter's ability to maintain signal integrity across multiple frequency bands.
Option 2: To assess the receiver's susceptibility to degradation from in-band noise within its assigned channel frequency.
Option 3: To determine the receiver's capability to withstand unwanted CW (Continuous Wave) interfering signals at frequencies outside its assigned channel, without exceeding a specified degradation threshold.
Option 4: To test the UE's handover performance between different dual band configurations.
Explanation: Spurious Response measurement is crucial for understanding how well a receiver can filter out unwanted signals (CW interference) at frequencies other than its assigned channel, thereby ensuring the quality of the wanted signal. This directly relates to the receiver's ability to manage out-of-band interference, which is essential for maintaining service quality in multi-frequency band operations like dual band 4C-HSDPA.