Signal transmission

In telecommunications, transmission is the process of sending or propagating an analog or digital signal via a medium that is wired, wireless, or fiber-optic.[1][2]

Antenna used for transmission of radio signals

Transmission technologies typically refer to physical layer protocol duties such as modulation, demodulation, line coding, equalization, error control, bit synchronization and multiplexing, but it may also involve higher-layer protocol duties, for example, digitizing an analog signal, and data compression.

Transmission of a digital message, or of a digitized analog signal, is known as data transmission.

Examples of transmission are the sending of signals with limited duration, for example, a block or packet of data, a phone call, or an email.


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