In telecommunication, especially radio communication, spread spectrum are techniques by which a signal (e.g., an electrical, electromagnetic, or acoustic) generated with a particular bandwidth is deliberately spread in the frequency domain over a wider frequency band. Spread-spectrum techniques are used for the establishment of secure communications, increasing resistance to natural interference, noise, and jamming, to prevent detection, to limit power flux density (e.g., in satellite downlinks), and to enable multiple-access communications.
In telecommunication, especially radio communication, spreadspectrum are techniques by which a signal (e.g., an electrical, electromagnetic, or acoustic)...
In digital communications, chirp spreadspectrum (CSS) is a spreadspectrum technique that uses wideband linear frequency modulated chirp pulses to encode...
innovations such as trunked radio systems, spreadspectrum, ultra-wideband, frequency reuse, dynamic spectrum management, frequency pooling, and cognitive...
and ownership verification. One technique for audio watermarking is spreadspectrum audio watermarking (SSW). In SSW, a narrow-band signal is transmitted...
A watermark is an identifying image or pattern in paper that appears as various shades of lightness/darkness when viewed by transmitted light (or when...
dispersion Seafloor spreading, the process leading to continental drift Spreadspectrum, communications signals over a range of frequencies Spread Toolkit - an...
communication technique. It is based on spreadspectrum modulation techniques derived from chirp spreadspectrum (CSS) technology. It was developed by Cycleo...
co-invented a radio guidance system for Allied torpedoes that used spreadspectrum and frequency hopping technology to defeat the threat of radio jamming...
frequency-hopping spreadspectrum (FHSS), where the channel frequency is changed rapidly according to a sequence that constitutes the spreading code. As an...
design. High peaks at single frequencies can be avoided by using the spreadspectrum method, in which different parts of the circuit emit at different frequencies...
In a spread-spectrum system, the process gain (or "processing gain") is the ratio of the spread (or RF) bandwidth to the unspread (or baseband) bandwidth...
support for the so-called separate reference clock with independent spreadspectrum clocking (SRIS) with some of its pre-production SATA Express hardware...
A spectrum analyzer measures the magnitude of an input signal versus frequency within the full frequency range of the instrument. The primary use is to...
technologies exist, including analogue wireless (radio), digital wireless (spread-spectrum, Wi-Fi, ultra-wideband) and digital wired (power-line communication)...
systems, and to other applications, such as in spread-spectrum communications (see chirp spreadspectrum). This signal type is biologically inspired and...
also allocated to ISM. [1] In the U.S., the FCC first made unlicensed spreadspectrum available in the ISM bands in rules adopted on May 9, 1985. The FCC...
antenna device to relay calls from one area to the next area. Radio and spreadspectrum technologies – Wireless local area networks use a high-frequency radio...
also known as Trellis modulation Spreadspectrum techniques Direct-sequence spreadspectrum (DSSS) Chirp spreadspectrum (CSS) according to IEEE 802.15...
frequency hopping, between the transmitter and receiver. It is one of the spreadspectrum techniques that became widely used in modern telecommunications. This...
machines. In spread-spectrum systems, the receiver correlates a locally generated signal with the received signal. Such spread-spectrum systems require...
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