Question: What is the primary purpose of measuring a receiver's ability to receive a E-UTRA signal in the presence of an unwanted narrow band CW interferer?
Option 1: To evaluate the transmitter's output power.
Option 2: To assess the receiver's sensitivity to wideband interference.
Option 3: To determine the receiver's ability to reject narrowband interference and maintain signal quality.
Option 4: To test the receiver's frequency hopping capability.
Explanation: The correct answer is Option 3 because the requirement mentioned in the text is specifically designed to measure a receiver's ability to receive a E-UTRA signal at its assigned channel frequency in the presence of an unwanted narrow band CW interferer. This test is crucial in evaluating the receiver's ability to reject narrowband interference and maintain signal quality, which is essential for reliable communication in wireless networks.