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carrier frequency

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carrier frequency

[′kar·ē·ər ‚frē·kwən·sē]
(communications)
The frequency generated by an unmodulated radio, radar, carrier communication, or other transmitter, or the average frequency of the emitted wave when modulated by a symmetrical signal. Also known as center frequency; resting frequency.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

carrier frequency

The frequency of the alternating current carrier, which produces the electromagnetic waves that radiate from radio-transmitting antennae. The audio-frequency signals from the microphone modulate the carrier. It is the steady frequency of a modulated wave and is the same as that before modulation is applied.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved

carrier frequency

The transmission of a fixed frequency that has been altered (modulated) to "carry" data. The frequency is measured in Hertz (cycles per second). See carrier, Hz, FDM and TDM.
Copyright © 1981-2025 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Carrier Frequency

 

the frequency of harmonic waves that are modulated by signals in order to transmit information. A wave at the carrier frequency is sometimes called a carrier wave, or a carrier. Waves at the carrier frequency do not, in themselves, contain any information; they only “carry” the information. In addition to the carrier frequency, the spectrum of modulated waves also includes the side frequencies, which contain the information being transmitted.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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References in periodicals archive
References [22, 31] also analyze the range-angle coupling of the SIAR system and optimize the carrier frequency distribution from the viewpoint of Fisher information matrix, which can also be applied here.
MIMO High Frequency Surface Wave Radar Using Sparse Frequency FMCW Signals
Using S-band carrier frequency, and 3 channel model path model which has the direct component, and the second delay is 100ns, the longest diameter expansion 180ns delay.
Multi user interference cancellation in satellite to ground uplink system based on improved WPIC algorithm
In the simulation design, the OFU technique is used to transport three wireless MIMO signals with the same RF carrier frequency of 2.4 GHz or 5 GHz over fiber.
Optical frequency upconversion technique for transmission of wireless MIMO-type signals over optical fiber
[n.sub.sync]: Synchronous speed of motor P: Number of poles [[omega].sub.ref] Reference speed [[omega].sub.r]: Rotor speed [[omega].sub.s]: Slip speed [[omega].sub.e]: Inverter command frequency [V.sub.abc]: Inverter output voltage [V.sub.abc*]: Inverter command voltage [f.sup.*]: Command frequency to inverter [V.sub.dc]: DC bus voltage of inverter f: Electrical frequency PI: Proportional integral controller e: Error signal [m.sub.a]: Modulation index [m.sub.f]: Frequency modulation ratio [f.sub.c]: Carrier frequency [f.sub.h]: Frequencies at which harmonics occur [f.sub.1]: Fundamental frequency.
A torque discontinuity free new hybrid PWM approach for high speed induction motor drives
3(a), the received signal strength decreased with the increase of carrier frequency. When the node burial depth of the receiving node was changed in a range of 30 cm-50 cm, the received signal strength remained at the highest level with relatively small changes.
Electromagnetic wave propagation in soil for wireless underground sensor networks
Due to the fact that frequency offset values in intradyne receivers exceed the maximum theoretical limit of 1/(8T) [27] that can be reached by decision directed algorithms at the considered symbol rate (i.e., [+ or -] 5 GHz; see [28]), typical intradyne coherent optical receivers are provided with a coarse carrier frequency recovery (CCFR) stage [2] that minimizes or reduces to zero this frequency gap to values in the theoretical range.
Efficient parallel carrier recovery for ultrahigh speed coherent QAM receivers with application to optical channels
We have introduced a wideband carrier frequency offset (WCFO) of 20 kHz for carrier frequency of 2 GHz.
A robust carrier frequency offset estimation algorithm in burst mode multicarrier CDMA based Ad Hoc networks
where [P.sub.t] represents the transmitted power of the interferer in dBm, [G.sub.t] and [G.sub.r] denote the interference transmitter and victim receiver antenna gains in dBi, S is the attenuation due to spectrum emission mask for every carrier frequency offset, [DELTA]f, between the victim and interferer.
Point-point fixed wireless and broadcasting services coexistence with IMT-Advanced system
Error probability as a function of local carrier frequency offset [DELTA]f is shown in Fig.
BPSK receiver based on adaptive structure with remodulation/Adaptyviosios strukturos BPSK imtuvo su pasikartojancia moduliacija tyrimas. (TELECOMMUNICATIONS ENGINEERING/TELEKOMUNIKACIJU INZINERIJA)
Through use of direct synthesis, the unit accurately creates wideband "bandwidth on demand" waveforms up to a 4.8 GHz carrier frequency with the new Option 02.
Arbitrary Waveform Generators Meet High-Performance Signal Generation Needs
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