What is the role of a repeater in a communication system?

A repeater plays a critical role in a communication system by performing signal regeneration. Its primary function is to receive weak or degraded signals that have been transmitted over distances and then amplify and retransmit these signals to ensure they maintain quality and strength. By regenerating the signal, the repeater mitigates issues such as attenuation and interference that can occur over long distances, allowing for more reliable communication.

The process of signal regeneration helps extend the range of communication systems, particularly in wired and wireless networks, where signals may lose strength and clarity as they travel. This capability is essential in various applications, including radio communications, optical fiber systems, and cellular networks, where maintaining signal integrity over distance is paramount for effective communication.