Direct Sequence Spread Spectrum (DSSS)

Family of IEEE standards for wireless LANs first introduced in 1997. The first standard to be implemented, 802. 11b, specifies from 1 to 11 Mbps in the unlicensed band using DSSS (direct sequence spread spectrum) technology. The Wireless Ethernet Compatibility Association (WECA) brands it as Wireless Fidelity (WiFi).
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A means or method of communication that occurs over multiple frequencies at the same time. Telecommunications techniques in which a signal is transmitted in a bandwidth considerably greater than the frequency content of the original information. Frequency hopping, direct sequence spreading, time scrambling, and combinations of these techniques are forms of spread spectrum.
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Permits the active or passive transfer of information between separated points without physical connection. Active information transfer may entail a transmit and/or receive emanation of energy, whereas passive information transfer entails a receiveonly capability. Currently wireless technologies use IR, acoustic, RF, and optical but, as technology evolves, wireless could include other methods of transmission.
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Replaces the last mile from the central office to the customer. This process usually consists of a pair of digital radio transmitters placed on rooftops, one at the central office and one at the users’ site. These systems usually operate at the 38 GHz portion of the spectrum. Also known as wireless fiber (because of the high speeds of throughput) and as fixed wireless local loop.
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The wireless network configuration that uses a wireless base station to connect all wireless devices to the network and potentially to each other.
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