Direct-sequence spread spectrum: Difference between revisions

Revision as of 13:04, 17 May 2006

Revision as of 13:11, 17 May 2006

Line 6:

# 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.

DSSS works on 11 channels which are set 5 MHz apart and each channel takes 20m20 MHz for its transmission so this way we have got three non-overlapping channels(Which have minimum Interference) these are 1, 6, 11.

Put simply, direct-sequence spread-spectrum transmissions multiply the data being transmitted by a "noise" signal. This noise signal is a pseudorandom sequence of <code>1</code> and <code>−1</code> values, at a frequency much higher than that of the original signal, thereby spreading the energy of the original signal into a much wider band.