Baseband transmission

In communications engineering , baseband transmission is understood to mean the transmission of a time signal in the frequency range which the time signal has as a frequency spectrum . This frequency spectrum is then also referred to as the baseband . In digital transmissions, line coding can influence the properties of the transmitted frequency spectrum in the baseband.

A baseband transmission has the following properties, among others:

• Little implementation effort.
• If necessary, a direct component is also transmitted. In the case of electrical transmission media, this means that there must be a direct galvanic coupling between the transmitter and receiver.
• Most transmission channels are not suitable for baseband transmission. In these cases, the baseband is shifted to other frequency ranges by means of certain modulation methods .
• Multiple use of the transmission medium can only take place with baseband transmission using time division multiplexing .

Application examples are the analog telephone connection or the Ethernet technology.

literature

• Rudolf Mäusl, Jürgen Göbel: Analog and digital modulation methods. Baseband and carrier modulation . Hüthig, Heidelberg 2002, ISBN 3-7785-2886-6 .