Broadband Transmission


Broadband Transmission is a signaling technology that sends signals simultaneously over a range of different frequencies as electromagnetic waves.

What is Broadband Transmission?

Broadband Transmission is a signaling technology that sends signals simultaneously over a range of different frequencies as electromagnetic waves. The bandwidth of a broadband system can usually carry multiple, simultaneous data signals.

These signals are unidirectional – traveling in only one direction at a time – so a broadband system can generally either transmit or receive but cannot do both simultaneously. Broadband signals can be regenerated using amplifiers in order to travel longer distances before becoming attenuated.

Broadband and Baseband Transmission
Broadband and Baseband Transmission

How does Broadband Transmission work?

Broadband transmissions are divided into multiple bands or channels by multiplexers using a multiplexing scheme such as frequency-division multiplexing (FDM). Each channel has a carrier frequency that is modulated to carry the signal from a given source. At the receiving station, multiplexers separate the various signals. Guard bands are used to prevent interference among channels.

Broadband transmission is typically used for environments in which video, audio, and data need to be transmitted simultaneously. Cable television systems are based on broadband transmission technologies. Other examples of broadband services include T-carrier services, Asynchronous Transfer Mode (ATM), and variants of Digital Subscriber Line (DSL).

See also: Baseband Transmission

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