Spread Spectrum Modulation

• The narrowband signal is suppressed when transmitting spread spectrum. With Direct Sequence Spread Spectrum (DSSS) the information being transmitted is mixed with a psuedo-noise (PN) digital signal which causes the RF signal to be replaced with a very wide bandwidth signal with the spectral equivalent of a noise signal.

• Radios that use DSSS: GPS, EPLRS, NTDR, Link-16

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