Baseband technology is mainly used in Ethernet networks to exchange data between nodes. Cable TV: Broadcasts multiple TV channels over a single cable. Additionally, sometimes, we use the term baseband to describe a group of frequencies used for data transmission: Baseband signals often travel over copper wires or fiber-optic cables. This is why fiber-optic cables are. AAU, RRU, and BBU are key components in a telecom network, particularly in modern wireless communication systems like 4G and 5G. Here's a breakdown of each: The central processing unit in a base station. Wireless − As the name depicts, there are no physical wired.