Question: What is the primary purpose of measuring Intermodulation Response Rejection in a UTRA FDD UE receiver, especially for features like dual band 4C-HSDPA?
Option 1: To assess the transmitter's ability to handle multiple uplink carriers simultaneously.
Option 2: To evaluate the receiver's capability to filter out unwanted signals generated by mixing of two or more interfering RF signals in the desired channel band.
Option 3: To determine the UE's power consumption when receiving signals on multiple frequency bands.
Option 4: To test the UE's handover performance between different base stations.
Explanation: Intermodulation Response Rejection is crucial for understanding how well a receiver can maintain signal integrity in the presence of interference from other signals, which could mix and fall into the desired channel's frequency band. This is particularly important for advanced features like dual band 4C-HSDPA, where the receiver must handle complex signal environments to support higher data rates and multiple bands.