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O que (quem) é narrow-band - definição

CONCEPT IN RADIO COMMUNICATIONS

Narrow-band

narrowband

<networking> A communication channel with a low data rate. [More specific?] The term is sometimes used for an Internet connection via a dial-up modem, typically at 56 kbaud, in contrast to broadband. (2003-10-15)

Narrowband

Narrowband signals are signals that occupy a narrow range of frequencies or that have a small fractional bandwidth. In the audio spectrum, narrowband sounds are sounds that occupy a narrow range of frequencies.

https://en.wikipedia.org/wiki/Narrowband

narrowband

¦ adjective of or involving signals over a narrow range of frequencies.

Wikipédia

Narrowband

Narrowband signals are signals that occupy a narrow range of frequencies or that have a small fractional bandwidth. In the audio spectrum, narrowband sounds are sounds that occupy a narrow range of frequencies. In telephony, narrowband is usually considered to cover frequencies 300–3400 Hz, i.e. the voiceband.

In radio communications, a narrowband channel is a channel in which the bandwidth of the message does not significantly exceed the channel's coherence bandwidth.

In the study of wired channels, narrowband implies that the channel under consideration is sufficiently narrow that its frequency response can be considered flat. The message bandwidth will therefore be less than the coherence bandwidth of the channel. That is, no channel has perfectly flat fading, but the analysis of many aspects of wireless systems is greatly simplified if flat fading can be assumed.

https://en.wikipedia.org/wiki/Narrowband

Exemplos do corpo de texto para narrow-band

1. "The system rewards a very narrow band of skills.

2. The storm was moving north east in a narrow band.

3. Younger students face a similarly narrow band of choices.

4. Cacao is grown around the globe, within a narrow band that straddles the equator.

5. IMKB to move in narrow band: In the days ahead the IMKB will move in a narrow band, according to experts. «As long as the index remains above 37,500, it could test 3',000.