Direct-sequence spread spectrum: Difference between revisions

Revision as of 19:53, 11 April 2006

Revision as of 04:25, 5 May 2006

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is the reason that it is called [[spread spectrum]]. DSSS has the following features:

# for generating spread-spectrum transmissions by [[Phase modulation|phase]]-modulating]] a [[sine wave]] [[pseudorandom]]ly with a continuous [[string (computer science)|string]] of [[pseudonoise]] [[code]] symbols, each of duration much smaller than a [[bit]].

# A [[Signaling (telecommunication)|signal]] structuring technique utilizing a [[digital]] code [[sequence]] ([[PN Sequences]]) having a [[chip rate]] much higher than the [[information]] signal [[bit rate]]. Each information bit of a [[digital signal]] is transmitted as a pseudorandom sequence of chips.