what is bbu mean
Baseband Unit (BBU). Baseband refers to the original frequency range of a transmission signal before it is modulated. Baseband can also refer to a type of data transmission in which digital or analog data is sent over a single non-multiplexed channel.A baseband unit (BBU) is a unit that processes baseband in telecomm systems.A typical wireless telecom station consists of the baseband processing unit and the RF processing unit (remote radio unit-RRU).aseband can also refer to a type of data transmission in which digital or analog data is sent over a single non-multiplexed channel. A baseband unit (BBU) is a unit that processes baseband in telecomm systems.