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Spelling: FrequencyHoppingSpreadSpectrum
FHSS [1] is a description for a mechanism used for radio
communications in which the allocated frequency range is divided into
a large number of channels, and transmitters send short bursts of
traffic on a single channel before hopping to the next in a
predictable sequence.
As used for wireless ethernet, FHSS [2] offers better noise immunity
than DSSS [3], but is limited (by regulation) to lower bandwidth.
Proxim was the manufacturer of popular FHSS [4] gear, and their cards
and AccessPoint [5]s were licensed by many other vendors.
With the release of 802.11b [6], FHSS [7] has become less popular due
to its slower bandwidth. As a consequence however, it is often
available secondhand very cheaply.
Links:
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[1] http://melbournewireless.org.au/?FHSS
[2] http://melbournewireless.org.au/?FHSS
[3] http://melbournewireless.org.au/?DSSS
[4] http://melbournewireless.org.au/?FHSS
[5] http://melbournewireless.org.au/?AccessPoint
[6] http://melbournewireless.org.au/?802.11b
[7] http://melbournewireless.org.au/?FHSS
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