DirectSequenceSpreadSpectrum (DSSS) is a method for utilizing a frequency band in a thoughtful way. DSSS spreads the input signal across a frequency band pseudo-randomly using a  predefined ChippingCode. [[802.11b]] uses this technique.

This page gives a pretty good explanation that is a little more in-depth:

http://www.qsl.net/n9zia/wireless/dsss.html

[CategoryGlossary]