Home
Main website
Display Sidebar
Hide Ads
Recent Changes
View Source:
FHSS
Edit
PageHistory
Diff
Info
LikePages
You are viewing an old revision of this page.
View the current version
.
[FHSS] is an [Acronym] for ''Frequency-Hopping Spread Spectrum''. FHSS is a spread-spectrum method of transmitting signals, by rapidly switching a carrier among many frequency channels, using a pseudorandom sequence known to both transmitter and receiver. A spread-spectrum transmission offers three main advantages over a fixed-frequency transmission: # Spread-spectrum signals are highly resistant to noise and interference. The process of re-collecting a spread signal spreads out noise and interference, causing them to recede into the background. # Spread-spectrum signals are difficult to intercept. A Frequency-Hop spread-spectrum signal sounds like a momentary noise burst or simply an increase in the background noise for short Frequency-Hop codes on any narrowband receiver except a Frequency-Hop spread-spectrum receiver using the exact same channel sequence as was used by the transmitter. # Spread-spectrum transmissions can share a frequency band with many types of conventional transmissions with minimal interference. The spread-spectrum signals add minimal noise to the narrow-frequency communications, and vice versa. As a result, bandwidth can be utilized more efficiently. FHSS was used in the original [802.11] standard, but was replaced with [DSSS]. * [FHSS at Wikipedia|http://en.wikipedia.org/wiki/Frequency-hopping_spread_spectrum] * [FHSS at wireless-nets.org |http://www.wireless-nets.com/articles/whitepaper_spread.htm ]
2 pages link to
FHSS
:
DSSS
SpreadSpectrum