frequency hopping


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frequency hopping

[′frē·kwən·sē ‚häp·iŋ]
(communications)
A spread-spectrum technique in which the frequency of the carrier changes pseudorandomly according to a pseudonoise code, with a consecutive group of code symbols defining a particular frequency.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

frequency hopping

A wireless modulation method that rapidly changes the center frequency of a transmission. See spread spectrum and 802.11.
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References in periodicals archive ?
Based on CC2510, the swarm-robot motor system adopts frequency hopping communication and apply in swarm-robot systems.
Also included in the devices is Adaptive Frequency Hopping software that eliminates interference between Bluetooth devices and other wireless networks.
"Theoretically, UWB pulse are so random and low powered, and are transmitted across such a wide swath of spectrum that they are indistinguishable from noise." Again, in theory, Paulo said UWB will not interfere with Bluetooth, since Bluetooth employs a frequency hopping spread spectrum scheme, in the 2.4GHz range.
Mobius 5224 Access Point comes in three form factors--an 802.11a expansion kit; an access point supporting both 802.11 a and 802.11 b; and one that supports 802.11a/802.11FH (frequency hopping).
The course includes: * LPI communication signals: Frequency Hopping, Chirp and Direct Sequence Spread Spectrum * LPI radar signals * LPI data signals * Overview of digital communication principles (as applicable to LPI modulations) * Error correction coding applied to LPI signals.
The inside RF frequency hopping spread spectrum transmitter operates in the 902-928 MHz frequency range, with no license required.
An important technical feature, which STATS' expanded RF test capabilities now support, is frequency hopping (FH).
"Wireless Access 2000" investigates internal Broadband Wireless disputes such as the battle over Time Division Duplexing (TDD) and Frequency Division Duplexing, (FDD), and the debate over which modulation scheme is better suited for wireless Internet access, Frequency Hopping Spread Spectrum (FHSS) or Direct Sequence Spread Spectrum (DSSS).
In addition, Nokia will provide its cutting-edge Intelligent Frequency Hopping (IFH) technology to further enhance the capacity and quality of the New World Mobility network.
Products compliant with the SWAP Specification operate in the 2.4 GHz frequency band and use frequency hopping spread spectrum radio frequency technology.
Spread spectrum technology in general makes phones much less prone to eavesdropping; frequency hopping is reportedly even more secure than direct sequence, another form of digital spread spectrum transmission.

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