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.

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.

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.

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.
References in periodicals archive ?
Synchronization includes symbol timing, sample clock, and carrier frequency synchronization.
More recently, gene frequency studies have shown that FA has a carrier frequency of 1/100 in black SA patients and therefore an expected birth incidence of 1/40 000.
The purpose of this is to frequency the shift the carrier frequency into a frequency that can be easily worked with.
Experimental data have indicated that the NT MW effects occur depending on several physical parameters, including carrier frequency, polarization, modulation, and intermittence (Belyaev 2005a).
When selecting a wireless system, it is imperative that the trade-offs related to power usage, carrier frequency, data throughput, and size are understood.
The ASSR stimulus consists of a carrier frequency (test frequency) modulated over time in the amplitude domain at a frequency of modulation (Perez-Abalo, et al.
Although it broadcast a clear carrier frequency -- the electronic signal that normally carries the mapping data -- for unknown reasons the transmitter stopped adding the Venus data to the monotone carrier signal.
When a digital data signal enters either DVM, that unit generates an analog carrier frequency that it modulates with the data pattern.
Sequans AIR is designed to work in any LTE network, regardless of eNodeB vendor, carrier frequency, channel bandwidth, or duplexing method.
MC-CDMA systems are more sensitive to carrier frequency offset (CFO) than single carrier modulation schemes.
For instance, the carrier frequency for cystic fibrosis was 1 in 40 among South Asians--a rate that is significantly higher than other reported rates (Genet.