CNET CWD-854 Bedienungsanleitung PDF herunterladen (Seite 44)

13. What is Spread Spectrum?

Spread Spectrum technology is a wideband radio frequency technique developed by the

military for use in reliable, secure, mission-critical communication systems. It is designed

to trade off bandwidth efficiency for reliability, integrity, and security. In other words, more

bandwidth is consumed than in the case of narrowband transmission, but the trade off

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).

14. What is WPS?

WPS stands for Wi-Fi Protected Setup. It provides a simple way to automatically establish

unencrypted or encrypted connections between wireless clients and access point. User

can press a software or hardware button to activate WPS function, and WPS-compatible

wireless clients and access point will establish connection by themselves. There are two

types of WPS: PBC (Push-Button Configuration) and PIN code.

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CNET CWD-854 Bedienungsanleitung Seite 44