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In telecommunications, a carrier signal, carrier wave, or just carrier, is a waveform (usually sinusoidal) that is modulated (modified) with an input signal for the purpose of conveying information.This carrier wave is usually a much higher frequency than the input signal.n the case of single-sideband modulation (SSB), the carrier is suppressed (and in some forms of SSB, eliminated). The carrier must be reintroduced at the receiver by a beat frequency oscillator (BFO).
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.aves at the carrier frequency do not, in themselves, contain any information; they only âcarryâ the information. In addition to the carrier frequency, the spectrum of modulated waves also includes the side frequencies, which contain the information being transmitted. 1  Facebook.