Planet-technology Wireless USB Adapter WL-U350 Manual do Utilizador descarregar pdf (Página 20)

produces a signal that is, in effect, louder and thus easier to detect, provided that the receiver

knows the parameters of the spread-spectrum signal being broadcast. If a receiver is not tuned

to the right frequency, a spread –spectrum signal looks like background noise. There are two

main alternatives, Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping Spread

Spectrum (FHSS).

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Planet-technology Wireless USB Adapter WL-U350 Manual do Utilizador Página 20