Which measurement is vital for determining the integrity of a transmitted signal?

The Modulation Error Ratio (MER) is fundamental in assessing the quality and integrity of a transmitted signal, particularly in digital communication systems. MER quantifies the difference between the actual modulated signal and the ideal signal, providing insight into how well the signal has been transmitted and received.

High MER values indicate that the signal closely resembles the intended transmission, implying robust communication with minimal distortion, noise, or interference effects. A low MER value, however, suggests significant discrepancies between the transmitted and received signals, which can lead to errors in data interpretation and overall system performance degradation.

While other factors such as signal processing speed, signal frequency, and channel capacity can impact transmission systems, they do not directly reflect the fidelity of the transmitted signal like MER does. The emphasis on MER highlights its critical role in ensuring transmitted signals maintain their integrity throughout the communication process, ultimately ensuring reliable data exchange.