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Definition of "Spread Spectrum" |
A technology that modulates a signal over many carrier frequencies at once. This method can be used to make transmissions more secure, reduce interference, and improve bandwidth-sharing. Spread-spectrum techniques can also be used to reduce electromagnetic interference by dithering the clock frequency so emissions are no longer concentrated at one frequency. / 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. / In telecommunication and radio communication, spread spectrum techniques are methods by which a signal generated with a particular bandwidth is deliberately spread in the frequency domain, resulting in a signal with a wider bandwidth. / A telephone exchange is a telecommunication system used in the public switched telephone network or in large enterprises. An exchange consists of electronic components and in older systems also human operators that interconnect telephone subscriber lines or virtual circuits of digital systems to establish telephone calls between subscribers. |
Definition of "spread-spectrum" |
a modulation procedure in which the spectrum of an information bearing signal is spread by some techniques such as multiplication by a pseudo-noise sequence. The result is a signal with much wider bandwidth that has better protection again interference. |
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