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Direct-sequence spread spectrum
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==Uses== * The United States [[GPS]], European [[Galileo positioning system|Galileo]] and Russian [[GLONASS]] [[satellite navigation]] systems; earlier GLONASS used DSSS with a single spreading sequence in conjunction with [[FDMA]], while later GLONASS used DSSS to achieve [[CDMA]] with multiple spreading sequences. * DS-CDMA (Direct-Sequence Code Division Multiple Access) is a [[multiple access]] scheme based on DSSS, by spreading the signals from/to different users with different codes. It is the most widely used type of [[CDMA]]. * [[Cordless telephone|Cordless phones]] operating in the 900 MHz, 2.4 GHz and 5.8 GHz [[Band (radio)|bands]] * [[IEEE 802.11b]] 2.4 GHz [[Wi-Fi]], and its predecessor [[802.11-1999]]. (Their successor [[802.11g]] uses both [[Orthogonal frequency-division multiplexing|OFDM]] and DSSS) * [[Automatic meter reading]] * [[IEEE 802.15.4]] (used, e.g., as PHY and MAC layer for [[Zigbee]], or, as the physical layer for [[WirelessHART]]) * [[Radio-controlled model]] Automotive, Aeronautical and Marine vehicles * Spread spectrum [[radar]] for covertness and resistance to [[Radar jamming and deception|jamming]] and [[Spoofing attack|spoofing]]
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