Question: What type of signal is used as the interfering signal to test the Dynamic Range requirement in E-UTRA Base Station (BS) receivers, ensuring a throughput requirement is met for a specified reference measurement channel?
Option 1: A modulated signal with the same characteristics as the wanted signal
Option 2: A single-tone interferer at the channel edge
Option 3: An Additive White Gaussian Noise (AWGN) signal
Option 4: A multi-carrier signal with varying power levels
Explanation: The correct answer is Option 3 because, according to specifications for E-UTRA Base Station radio transmission and reception, particularly in the context of Dynamic Range, an AWGN (Additive White Gaussian Noise) signal is utilized as the interfering signal. This setup evaluates the receiver's capability to maintain satisfactory throughput for a specified reference measurement channel when subjected to interference within the received channel bandwidth. The use of AWGN provides a standardized, unbiased measure of the receiver's performance under noisy conditions.