Spread Spectrum
In telecommunication and radio communication, spread-spectrum techniques are methods by which a signal (e.g. an electrical, electromagnetic, or acoustic signal) generated with a particular bandwidth is deliberately spread in the frequency domain, resulting in a signal with a wider bandwidth. These techniques are used for a variety of reasons, including the establishment of secure communications, increasing resistance to natural interference, noise and jamming, to prevent detection, and to limit power flux density (e.g. in satellite downlinks).
Read more about Spread Spectrum: Spread-spectrum Telecommunications, Spread-spectrum Clock Signal Generation
Other articles related to "spread spectrum, spread, spectrum":
... In digital communications, chirp spread spectrum (CSS) is a spread spectrum technique that uses wideband linear frequency modulated chirp pulses to encode information ...
... band is used for each aircraft (except for 2.4 GHz systems which use spread spectrum modulation, described below) ... Newer Transmitters use spread spectrum technology in the 2.4 GHz frequency for communication ... Spread spectrum technology allows many pilots to transmit in the same band (2.4 GHz) in close proximity to each other with little fear of conflicts ...
... Spread-spectrum clock generation (SSCG) is used in some synchronous digital systems, especially those containing microprocessors, to reduce the spectral density of the ... has an unavoidably narrow frequency spectrum ... digital systems radiate electromagnetic energy on a number of narrow bands spread on the clock frequency and its harmonics, resulting in a frequency spectrum that, at certain ...
... However, spread spectrum techniques use a transmission bandwidth that is several orders of magnitude greater than the minimum required signal bandwidth ... These systems were designed using spread spectrum because of its security and resistance to jamming ... Asynchronous CDMA has some level of privacy built in because the signal is spread using a pseudo-random code this code makes the spread spectrum signals appear random or have ...
... Soundcast employs Spread Spectrum technology ... principle ways this can be done Frequency Hopping Spread Spectrum (FHSS)—such as used by Bluetooth, and Direct Sequencing Spread Spectrum (DSSS)—such as used by 802.11b ...
Famous quotes containing the word spread:
“In a moment when criticism shows a singular dearth of direction every man has to be a law unto himself in matters of theatre, writing, and painting. While the American Mercury and the new Ford continue to spread a thin varnish of Ritz over the whole United States there is a certain virtue in being unfashionable.”
—John Dos Passos (1896–1970)