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Narrowband definition

Narrowband is a limited-capacity communication type that uses a narrow range (or band) of frequencies to transmit information. Narrowband is commonly used in radio communication, emergency services, and internet connections. This communication type utilizes limited bandwidth, making transmitting information over long distances easier. Narrowband is the opposite of wideband, which uses a large range of frequencies.

See also: wireless fidelity

How narrowband communication works

  • Narrowband transmits information through a small range of frequencies.
  • In narrowband communication, the signal is changed to fit within this small frequency range (e.g., by changing the amplitude).
  • The adapted (modulated) signal is transmitted over a narrow frequency range (typically a few kilohertz to a few megahertz).
  • When the receiver picks up the narrowband signal, it extracts (demodulates) the information from the signal, allowing it to interpret it.

Narrowband benefits

  • With narrowband technology, multiple users can share a limited amount of frequency.
  • Using a small range of frequencies allows for more efficient bandwidth use and makes it easier to transfer information over long distances with less power.

Narrowband limitations

  • You can only send a limited amount of data due to limited bandwidth.
  • Narrowband communication typically has slower data transfer rates compared to several other types of communication.
  • Narrowband communication is more susceptible to interference from electromagnetic noise and other radio signals.

Further reading

Ultimate digital security