Baseband - definition

The term "baseband" describes the unmodified, original signal that is sent through a communication channel without being converted to a higher frequency. The original binary data that is transferred over the channel in digital communications is represented by the baseband signal. Low-frequency baseband signals are frequently readily conveyed across copper cables, fiber optic cables, or wireless channels.
Baseband is a term used in networking to describe the physical layer of a communication protocol, which comprises baseband signal transmission via a channel like Ethernet cables or Wi-Fi radio waves. Baseband, as used in this context, describes digital signals that are sent across a communication channel without being modulated or converted to a higher frequency.
Baseband processing is the modification of the original signal while it is still operating at its original frequency, without any frequency conversion. Applications for baseband processing include wireless communication systems, digital signal processing, audio and video processing, and digital signal processing. The majority of the time, baseband processing is carried out with the aid of specialist hardware or software that may be tailored for a variety of signal processing jobs.